Please enter a valid full or partial manufacturer part number with a minimum of 3 letters or numbers

    74HC273 Search Results

    74HC273 Result Highlights (5)

    Part ECAD Model Manufacturer Description Download Buy
    74HC273TVELL-E Renesas Electronics Corporation HD/RD74HC Series, , / Visit Renesas Electronics Corporation
    74HC273FPV-E Renesas Electronics Corporation HD/RD74HC Series Visit Renesas Electronics Corporation
    74HC273FPVEL-E Renesas Electronics Corporation HD/RD74HC Series, , / Visit Renesas Electronics Corporation
    74HC273PV-E Renesas Electronics Corporation HD/RD74HC Series, , / Visit Renesas Electronics Corporation
    HD74HC273RP Renesas Electronics Corporation Octal D-Type Flip-Flops (with Clear), , / Visit Renesas Electronics Corporation
    SF Impression Pixel

    74HC273 Price and Stock

    Rochester Electronics LLC SN74HC273QPWRG4Q1

    SN74HC273-Q1 AUTOMOTIVE CATALOG
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SN74HC273QPWRG4Q1 Bulk 55,359 610
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.49
    • 10000 $0.49
    Buy Now

    Rochester Electronics LLC MM74HC273SJX

    IC FF D-TYPE SNGL 8BIT 20SOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MM74HC273SJX Bulk 20,361 542
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.55
    • 10000 $0.55
    Buy Now
    MM74HC273SJX Bulk 1,439 542
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.55
    • 10000 $0.55
    Buy Now

    Rochester Electronics LLC MC74HC273ADWR2

    IC FF D-TYPE SNGL 8BIT 20SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MC74HC273ADWR2 Bulk 7,578 1,902
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.16
    Buy Now

    Rochester Electronics LLC 74HC273N,652

    IC FF D-TYPE SNGL 8BIT 20DIP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey 74HC273N,652 Tube 7,336 807
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.37
    • 10000 $0.37
    Buy Now

    onsemi MC74HC273ADTR2G

    IC FF D-TYPE SNGL 8BIT 20TSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MC74HC273ADTR2G Cut Tape 6,115 1
    • 1 $1.21
    • 10 $0.724
    • 100 $0.4707
    • 1000 $0.33735
    • 10000 $0.33735
    Buy Now
    MC74HC273ADTR2G Digi-Reel 6,115 1
    • 1 $1.21
    • 10 $0.724
    • 100 $0.4707
    • 1000 $0.33735
    • 10000 $0.33735
    Buy Now
    MC74HC273ADTR2G Reel 2,500 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.30379
    Buy Now
    Avnet Americas MC74HC273ADTR2G Reel 4 Weeks 1,250
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.272
    Buy Now
    MC74HC273ADTR2G Reel 0 Weeks, 2 Days 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    MC74HC273ADTR2G Reel 14 Weeks 5,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.18274
    Buy Now
    Newark MC74HC273ADTR2G Reel 2,500
    • 1 $0.344
    • 10 $0.344
    • 100 $0.344
    • 1000 $0.344
    • 10000 $0.31
    Buy Now
    Rochester Electronics MC74HC273ADTR2G 7,040 1
    • 1 $0.2917
    • 10 $0.2917
    • 100 $0.2742
    • 1000 $0.2479
    • 10000 $0.2479
    Buy Now
    TME MC74HC273ADTR2G 1,579 1
    • 1 $0.565
    • 10 $0.565
    • 100 $0.366
    • 1000 $0.304
    • 10000 $0.304
    Buy Now
    Avnet Silica MC74HC273ADTR2G 50,000 13 Weeks 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Chip1Stop MC74HC273ADTR2G 1,750
    • 1 -
    • 10 $0.339
    • 100 $0.2711
    • 1000 $0.267
    • 10000 $0.267
    Buy Now
    EBV Elektronik MC74HC273ADTR2G 14 Weeks 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Flip Electronics MC74HC273ADTR2G 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Win Source Electronics MC74HC273ADTR2G 34,000
    • 1 -
    • 10 -
    • 100 $0.848
    • 1000 $0.566
    • 10000 $0.566
    Buy Now

    74HC273 Datasheets (63)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    74HC273 Philips Semiconductors Octal D-type flip-flop with reset positive-edge trigger Original PDF
    74HC273 System Logic Semiconductor Octal D Flip-Flop with Common Clock and Reset Original PDF
    74HC273BQ Philips Semiconductors 74HC/HCT273, Octal D-type flip-flop with reset, positive-edge trigger Original PDF
    74HC273BQ,115 NXP Semiconductors 74HC273 - IC HC/UH SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, PQCC20, 2.50 X 4.50 MM, 0.85 MM HEIGHT, PLASTIC, MO-241, SOT-764-1, DHVQFN-20, FF/Latch Original PDF
    74HC273BQ,115 NXP Semiconductors Octal D-type flip-flop with reset; positive-edge trigger - Description: D-Type Flip-Flop with Reset; Positive-Edge Trigger ; Fmax: 122 MHz; Logic switching levels: CMOS ; Number of pins: 20 ; Output drive capability: +/- 5.2 mA ; Power dissipation considerations: Low Power or Battery Applications ; Propagation delay: 15@5V ns; Voltage: 2.0-6.0 V; Package: SOT764-1 (DHVQFN20); Container: Reel Pack, SMD, 7" Original PDF
    74HC273BQ-G NXP Semiconductors 74HC273BQ - Octal D-type flip-flop with reset; positive-edge trigger - Description: D-Type Flip-Flop with Reset; Positive-Edge Trigger ; Fmax: 122 MHz; Logic switching levels: CMOS ; Number of pins: 20 ; Output drive capability: +/- 5.2 mA ; Power dissipation considerations: Low Power or Battery Applications ; Propagation delay: 15@5V ns; Voltage: 2.0-6.0 V Original PDF
    74HC273BQ-G NXP Semiconductors Octal D-type flip-flop with reset; positive-edge trigger - Description: D-Type Flip-Flop with Reset; Positive-Edge Trigger ; Fmax: 122 MHz; Logic switching levels: CMOS ; Number of pins: 20 ; Output drive capability: +/- 5.2 mA ; Power dissipation considerations: Low Power or Battery Applications ; Propagation delay: 15@5V ns; Voltage: 2.0-6.0 V Original PDF
    74HC273BQ-Q100X NXP Semiconductors 74HC273BQ-Q100 - 74HC273BQ-Q100 - Octal D-type flip-flop with reset; positive-edge trigger Original PDF
    74HC273D NXP Semiconductors Octal D-type flip-flop with reset; positive-edge trigger Original PDF
    74HC273D Philips Semiconductors Octal D-type flip-flop with reset positive-edge trigger Original PDF
    74HC273D Toshiba Semiconductor and Storage Integrated Circuits (ICs) - Logic - Flip Flops - IC FF D-TYPE SNGL 8BIT 20SOIC Original PDF
    74HC273D Unknown Historical semiconductor price guide (US$ - 1998). From our catalog scanning project. Historical PDF
    74HC273D Philips Semiconductors Octal D-Type Flip-Flop with Reset, Positive-Edge Trigger Scan PDF
    74HC273D,652 NXP Semiconductors 74HC273 - IC HC/UH SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, PDSO20, 7.50 MM, PLASTIC, MS-013, SOT-163-1, SOP-20, FF/Latch Original PDF
    74HC273D,652 NXP Semiconductors Octal D-type flip-flop with reset; positive-edge trigger - Description: D-Type Flip-Flop with Reset; Positive-Edge Trigger ; Fmax: 122 MHz; Logic switching levels: CMOS ; Number of pins: 20 ; Output drive capability: +/- 5.2 mA ; Power dissipation considerations: Low Power or Battery Applications ; Propagation delay: 15@5V ns; Voltage: 2.0-6.0 V; Package: SOT163-1 (SO20); Container: Bulk Pack, CECC Original PDF
    74HC273D,653 NXP Semiconductors 74HC273 - IC HC/UH SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, PDSO20, 7.50 MM, PLASTIC, MS-013, SOT-163-1, SOP-20, FF/Latch Original PDF
    74HC273D,653 NXP Semiconductors Octal D-type flip-flop with reset; positive-edge trigger - Description: D-Type Flip-Flop with Reset; Positive-Edge Trigger ; Fmax: 122 MHz; Logic switching levels: CMOS ; Number of pins: 20 ; Output drive capability: +/- 5.2 mA ; Power dissipation considerations: Low Power or Battery Applications ; Propagation delay: 15@5V ns; Voltage: 2.0-6.0 V; Package: SOT163-1 (SO20); Container: Reel Pack, SMD, 13", CECC Original PDF
    74HC273DB NXP Semiconductors Octal D-type flip-flop with reset; positive-edge trigger Original PDF
    74HC273DB Philips Semiconductors Octal D-type flip-flop with reset positive-edge trigger Original PDF
    74HC273DB Unknown Historical semiconductor price guide (US$ - 1998). From our catalog scanning project. Historical PDF

    74HC273 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    74hc273

    Abstract: harris hct273
    Text: [ /Title CD74 HC273 , CD74 HCT27 3 /Subject (High Speed CMOS Logic Octal DType Flip- CD54/74HC273, CD54/74HCT273 Data sheet acquired from Harris Semiconductor SCHS174A High Speed CMOS Logic Octal D-Type Flip-Flop with Reset February 1998 - Revised May 2000


    Original
    PDF SCHS174A CD54/74HC273, CD54/74HCT273 HC273 HCT273 59628772501RA CD54HCT273F CD54HCT273F3A 5962View 8772501RA 74hc273 harris hct273

    74HC273

    Abstract: 74hct273
    Text: [ /Title CD74 HC273 , CD74 HCT27 3 /Subject (High Speed CMOS Logic Octal DType Flip- CD54/74HC273, CD54/74HCT273 Data sheet acquired from Harris Semiconductor SCHS174A High Speed CMOS Logic Octal D-Type Flip-Flop with Reset February 1998 - Revised May 2000


    Original
    PDF HC273 HCT27 CD54/74HC273, CD54/74HCT273 SCHS174A HC273 HCT273 74HC273 74hct273

    74HC273

    Abstract: HCT273 74HC273N TSSOP20 Package 74HCT273 SO20 Package SSOP20 package 74HC273BQ 74HC273D 74HC273DB
    Text: 74HC273; 74HCT273 Octal D-type flip-flop with reset; positive-edge trigger Rev. 03 — 24 January 2006 Product data sheet 1. General description The 74HC273; 74HCT273 is a high-speed Si-gate CMOS device and is pin compatible with Low-power Schottky TTL LSTTL .


    Original
    PDF 74HC273; 74HCT273 74HCT273 HCT273 74HC273 74HC273N TSSOP20 Package SO20 Package SSOP20 package 74HC273BQ 74HC273D 74HC273DB

    74HC273A

    Abstract: 74HC273 DL129 LS273 MC54HCXXXAJ MC74HCXXXAN
    Text: MOTOROLA SEMICONDUCTOR TECHNICAL DATA Octal D Flip-Flop with Common Clock and Reset MC54/74HC273A High–Performance Silicon–Gate CMOS The MC54/74HC273A is identical in pinout to the LS273. The device inputs are compatible with standard CMOS outputs; with pullup resistors,


    Original
    PDF MC54/74HC273A MC54/74HC273A LS273. DL129 MC74HC273A/D 74HC273A 74HC273 LS273 MC54HCXXXAJ MC74HCXXXAN

    Untitled

    Abstract: No abstract text available
    Text: 74HC273-Q100; 74HCT273-Q100 Octal D-type flip-flop with reset; positive-edge trigger Rev. 1 — 19 June 2013 Product data sheet 1. General description The 74HC273-Q100; 74HCT273-Q100 is an octal positive-edge triggered D-type flip-flop. The device features clock CP and master reset (MR) inputs. The outputs Qn assume the


    Original
    PDF 74HC273-Q100; 74HCT273-Q100 74HCT273-Q100 HCT273

    74HC273A

    Abstract: 74HC273 DL129 LS273 MC54HCXXXAJ MC74HCXXXAN MC54-74HC273A D4714
    Text: MOTOROLA SEMICONDUCTOR TECHNICAL DATA Octal D Flip-Flop with Common Clock and Reset MC54/74HC273A High–Performance Silicon–Gate CMOS The MC54/74HC273A is identical in pinout to the LS273. The device inputs are compatible with standard CMOS outputs; with pullup resistors,


    Original
    PDF MC54/74HC273A MC54/74HC273A LS273. DL129 MC54/74HC273A/D* MC54/74HC273A/D 74HC273A 74HC273 LS273 MC54HCXXXAJ MC74HCXXXAN MC54-74HC273A D4714

    74HC273

    Abstract: 74HC273D 74HCT273 74HC273BQ 74HC273DB 74HC273N 74HC273PW DIP20 74HCT273D
    Text: 74HC273; 74HCT273 Octal D-type flip-flop with reset; positive-edge trigger Product data sheet 1. General description The 74HC273; 74HCT273 is a high-speed Si-gate CMOS device and is pin compatible with Low-power Schottky TTL LSTTL . The 74HC273; 74HCT273 has eight edge-triggered, D-type flip-flops with individual


    Original
    PDF 74HC273; 74HCT273 74HCT273 OT146-1 MS-001 SC-603 74HC273 74HC273D 74HC273BQ 74HC273DB 74HC273N 74HC273PW DIP20 74HCT273D

    74hc273

    Abstract: HCT273 74hct273 74HC273D
    Text: 74HC273; 74HCT273 Octal D-type flip-flop with reset; positive-edge trigger Rev. 4 — 10 June 2013 Product data sheet 1. General description The 74HC273; 74HCT273 is an octal positive-edge triggered D-type flip-flop. The device features clock CP and master reset (MR) inputs. The outputs Qn will assume the state of


    Original
    PDF 74HC273; 74HCT273 74HCT273 74HC273: 74HCT273: HCT273 74hc273 HCT273 74HC273D

    Untitled

    Abstract: No abstract text available
    Text: Technical Data CD54/74HC273 CD54/74HCT273 File Number 1479 High-Speed CMOS Logic Octal D Flip-Flop with Reset Type Features: • Common clock and asynchronous master reset ■ Positive-edge triggering ■ Buffered inputs ■ Typical fmat — 60 MHz @ Vcc ~ 5 V, C l = 15pF, 7a = 25° C


    OCR Scan
    PDF CD54/74HC273 CD54/74HCT273 54/74H

    74HC273

    Abstract: 74HCT273
    Text: G E SOLI» STATE 01 D E | 3Û7S0Ô1 001175=1 4 Technical Data. T-46-07-05 CD54/74HC273 CD54/74HCT273 File Number 1479 High-Speed CMOS Logic Octal D Flip-Flop with Reset Type Features: • Common clock and asynchronous master reset ■ Positive-edge triggering


    OCR Scan
    PDF T-46-07-05 CD54/74HC273 CD54/74HCT273 92C3-36976R2 vce--------------90% 74HCT 92CS-360B5 74HC273 74HCT273

    74hc273a

    Abstract: 74HC273
    Text: MOTOROLA SEMICONDUCTOR TECHNICAL DATA O ctal D Flip-Flop w ith Common Clock and Reset M C54/74HC273A High-Performance Silicon-Gate CMOS J SUFFIX CERAMIC PACKAGE CASE 732-03 The MC54/74HC273A is identical in pinout to the LS273. The device inputs are compatible with standard CMOS outputs; with pullup resistors,


    OCR Scan
    PDF MC54/74HC273A LS273. DL129 MC54/74HC273A 74hc273a 74HC273

    74hc273a

    Abstract: 74hc273 ls273
    Text: MOTOROLA SC LOGIC m blE V b3b?2S2 GD'U'U? 643 M M O T M MOTOROLA / " V ó - o 7 _ // SEMICONDUCTOR! TECHNICAL DATA MC54/74HC273A Octal D Flip-Flop with Common Clock and Reset High-Performance Silicon-Gate CMOS The MC54/74HC273A is identical in pinout to the LS273. The device inputs


    OCR Scan
    PDF MC54/74HC273A LS273. b3b7252 MC54/74HC273A 74hc273a 74hc273 ls273

    C273A

    Abstract: No abstract text available
    Text: MOTOROLA SEMICONDUCTOR TECHNICAL DATA Octal D Flip-Flop w ith Common Clock and Reset MC54/74HC273A High-Performance Silicon-Gate CMOS The MC54/74HC273A is identical in pinout to the LS273. The device inputs are compatible with standard CMOS outputs; with pullup resistors,


    OCR Scan
    PDF MC54/74HC273A MC54/74HC273A LS273. C273A/D C273A

    Untitled

    Abstract: No abstract text available
    Text: GD54/74HC273, GD54/74HCT273 OCTAL D-TYPE FLIP-FLOPS WITH COMMON CLOCK & CLEAR General Description These devices are identical in pinout to the 5 4 /7 4 L S 2 7 3 . They consist of eight master/slave D- Pin Configuration type flip-flops with a common Clock and common


    OCR Scan
    PDF GD54/74HC273, GD54/74HCT273

    74HC273

    Abstract: 74hct273 74LS273 74HC GD74HC273 pin diagram of 74ls273 GD74HC27 OT273
    Text: GD54/74HC273, GD54/74HCT273 OCTAL D-TYPE FLIP-FLOPS WITH COMMON CLOCK & CLEAR General Description These devices are identical in pinout to the 5 4 /7 4 L S 2 7 3 . They consist of eight master/slave D- Pin Configuration type flip-flops with a common Clock and common


    OCR Scan
    PDF GD54/74HC273, GD54/74HCT273 54/74LS273. H02A757 74HC273 74hct273 74LS273 74HC GD74HC273 pin diagram of 74ls273 GD74HC27 OT273

    74hc273

    Abstract: 54HC273 74HCT273
    Text: Technical Data, CD54/74HC273 CD54/74HCT273 File Number 1479 High-Speed CMOS Logic Octal D Flip-Flop with Reset Type Features: • Comm on clock and asynchronous master reset • Positive-edge triggering ■ Buffered inputs ■ Typical fm,K = 60 M H z 'SET


    OCR Scan
    PDF CD54/74HC273 CD54/74HCT273 54/74H 74hc273 54HC273 74HCT273

    74hc273a

    Abstract: 74HC273 MC54/74HC273A LS273 MC54HCXXXAJ MC74HCXXXAN MC54-74HC273A
    Text: MOTOROLA SEMICONDUCTOR TECHNICAL DATA O ctal D Flip-Flop w ith Common Clock and Reset MC54/74HC273A High-Performance Silicon-Gate CMOS J SUFFIX CERAMIC PACKAGE CASE 7 3 2 -0 3 The MC54/74HC273A is identical in pinout to the LS273. The device inputs are compatible with standard CMOS outputs; with pullup resistors,


    OCR Scan
    PDF MC54/74HC273A LS273. DL129 74hc273a 74HC273 LS273 MC54HCXXXAJ MC74HCXXXAN MC54-74HC273A

    Untitled

    Abstract: No abstract text available
    Text: M IT S U B IS H I HIGH SPEED CMOS M 74HC273P M 74HC273DW P OCTAL D -T Y P E F L IP -F L O P W ITH COMMON CLOCK AND R ESET DESCRIPTION PIN CONFIGURATION TOP VIEW The M 74H C 273 is a sem iconductor integrated circuit con­ sisting of eigh t p o s itiv e -e d g e trig g e re d D -type flip flops


    OCR Scan
    PDF 74HC273P 74HC273DW M74HC273P M74HC273DW

    74HC273

    Abstract: No abstract text available
    Text: MOTOROLA SEMICONDUCTOR TECHNICAL DATA MC54/74HC273A Octal D Flip-Flop with Common Clock and Reset High-Performance Silicon-Gate CMOS The M C54/74HC273A is identical in pinout to the LS273. The device inputs are com patible with standard CMOS outputs; with puilup resistors, they are


    OCR Scan
    PDF MC54HC273A MC74HC273A LS273. MC54/74HC273A 74HC273

    74hc273

    Abstract: No abstract text available
    Text: MOTOROLA SEMICONDUCTOR TECHNICAL DATA MC54/74HC273 O ctal D Flip-Flop w ith Common C lo ck and Reset High-Performance Silicon-Gate CMOS The M C 54/74H C 27 3 is id entical in p in o u t to the LS273. The device in p u ts are co m p a tib le w ith standard CM O S o u tp u ts ; w ith pullu p resistors, th e y are c o m p a tib le


    OCR Scan
    PDF MC54/74HC273 MC54HC273 MC74HC273 LS273. 74hc273

    74hc273

    Abstract: 74HCT273
    Text: Technical Data CD54/74HC273 CD54/74HCT273 File Number 1 4 7 9 .1 High-Speed CMOS Logic Octal D Flip-Flop with Reset CLOCK CP “ D 2- -QO - 01 -02 03- -0 3 00□I - DATA _ IN P U T S 04- -0 4 05- -0 5 06- -0 6 07- -0 7 RESET TTR _ OATA O U TP U TS Type Feature*:


    OCR Scan
    PDF CD54/74HC273 CD54/74HCT273 74hc273 74HCT273

    74HC273

    Abstract: 74LS273 74hct273 74HC GD54HC273 GD74HC273 GD54-74HC
    Text: GD54/74HC273, GD54/74HCT273 OCTAL D-TYPE FLIP-FLOPS WITH COMMON CLOCK & CLEAR General Description Pin Configuration These devices are identical in pinout to the 5 4 /7 4 L S 2 7 3 . They consist of eight master/slave Dtype flip-flops with a common Clock and common


    OCR Scan
    PDF GD54/74HC273, GD54/74HCT273 54/74LS273. 74HC273 74LS273 74hct273 74HC GD54HC273 GD74HC273 GD54-74HC

    74HC273

    Abstract: 74hct273 CD54HC273 CD54HCT273 CD74HC273 CD74HCT273
    Text: T -H & -c r7 -*// Technical Data CD54/74HC273 CD54/74HCT273 Filé Number HARRIS SEMICOND SECTOR 27E » m 1479 43G2271 001774^ S Si HAS High-Speed CMOS Logic Octal D Flip-Flop with Reset Type Features: • Common clock and asynchronous master reset ■ Positive-edge triggering


    OCR Scan
    PDF CD54/74HC273 CD54/74HCT273 43G2271 92CS-169 9IC3-37I99RI 36354ri 74HCT 74HC273 74hct273 CD54HC273 CD54HCT273 CD74HC273 CD74HCT273

    74hc273

    Abstract: tc741
    Text: TC74LVQ273F/FW/FS OCTAL D-TYPE FLIP FLOP WITH CLEAR The TC74LVQ273 is a high speed CMOS OCTAL D-FLIP FLOP fabricated w ith silicon gate and double-layer metal w iring C2M OS technology. Designed for use in 3.3 Volt systems, it achieves high speed operation w hile maintaining the CMOS low power


    OCR Scan
    PDF TC74LVQ273F/FW/FS TC74LVQ273 160MHz TC741VQ273F/FW/FS 74hc273 tc741