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

    M74HC540 Search Results

    SF Impression Pixel

    M74HC540 Price and Stock

    onsemi MM74HC540WMX

    IC BUFFER INVERT 6V 20SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MM74HC540WMX Cut Tape 2,923 1
    • 1 $1.4
    • 10 $0.846
    • 100 $0.5569
    • 1000 $0.44078
    • 10000 $0.44078
    Buy Now
    MM74HC540WMX Digi-Reel 2,923 1
    • 1 $1.4
    • 10 $0.846
    • 100 $0.5569
    • 1000 $0.44078
    • 10000 $0.44078
    Buy Now
    MM74HC540WMX Reel 1,000 1,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.40463
    • 10000 $0.3238
    Buy Now
    Avnet Americas MM74HC540WMX Reel 4 Weeks 995
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.36216
    • 10000 $0.33198
    Buy Now
    MM74HC540WMX Reel 12 Weeks 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.22344
    Buy Now
    Mouser Electronics MM74HC540WMX 7,590
    • 1 $0.84
    • 10 $0.712
    • 100 $0.483
    • 1000 $0.355
    • 10000 $0.315
    Buy Now
    Newark MM74HC540WMX Reel 1,000
    • 1 $0.433
    • 10 $0.433
    • 100 $0.433
    • 1000 $0.433
    • 10000 $0.378
    Buy Now
    MM74HC540WMX Cut Tape 1,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.475
    • 10000 $0.475
    Buy Now
    Rochester Electronics MM74HC540WMX 1,307 1
    • 1 $0.3668
    • 10 $0.3668
    • 100 $0.3448
    • 1000 $0.3118
    • 10000 $0.3118
    Buy Now
    Avnet Silica MM74HC540WMX 13 Weeks 1,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    EBV Elektronik MM74HC540WMX 13 Weeks 1,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now

    onsemi MM74HC540MTCX

    IC BUFFER INVERT 6V 20TSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MM74HC540MTCX Cut Tape 2,069 1
    • 1 $1.19
    • 10 $0.708
    • 100 $0.4601
    • 1000 $0.32942
    • 10000 $0.32942
    Buy Now
    MM74HC540MTCX Digi-Reel 2,069 1
    • 1 $1.19
    • 10 $0.708
    • 100 $0.4601
    • 1000 $0.32942
    • 10000 $0.32942
    Buy Now
    MM74HC540MTCX Reel 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.29654
    Buy Now
    Avnet Americas MM74HC540MTCX Reel 12 Weeks 5,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.26078
    Buy Now
    Mouser Electronics MM74HC540MTCX 3,821
    • 1 $0.66
    • 10 $0.552
    • 100 $0.374
    • 1000 $0.283
    • 10000 $0.248
    Buy Now
    Newark MM74HC540MTCX Reel 2,500
    • 1 $0.339
    • 10 $0.339
    • 100 $0.339
    • 1000 $0.339
    • 10000 $0.305
    Buy Now
    Avnet Silica MM74HC540MTCX 13 Weeks 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Chip1Stop MM74HC540MTCX 1,628
    • 1 -
    • 10 $0.3729
    • 100 $0.3057
    • 1000 $0.2522
    • 10000 $0.2522
    Buy Now
    EBV Elektronik MM74HC540MTCX 13 Weeks 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now

    Rochester Electronics LLC MM74HC540MTC

    BUS DRIVER, HC/UH SERIES, 1-FUNC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MM74HC540MTC Bulk 1,825 919
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.33
    • 10000 $0.33
    Buy Now

    onsemi MM74HC540MTC

    IC BUFFER INVERT 6V 20TSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MM74HC540MTC Tube 619 1
    • 1 $1.32
    • 10 $0.791
    • 100 $0.5175
    • 1000 $0.40776
    • 10000 $0.40776
    Buy Now
    Avnet Americas MM74HC540MTC Tube 4 Weeks 1,107
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.30736
    Buy Now
    Newark MM74HC540MTC Bulk 675
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Rochester Electronics MM74HC540MTC 66,375 1
    • 1 $0.3296
    • 10 $0.3296
    • 100 $0.3098
    • 1000 $0.2802
    • 10000 $0.2802
    Buy Now
    Chip1Stop MM74HC540MTC 525
    • 1 -
    • 10 $0.702
    • 100 $0.501
    • 1000 $0.354
    • 10000 $0.354
    Buy Now

    onsemi MM74HC540WM

    IC BUFFER INVERT 6V 20SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MM74HC540WM Tube 122 1
    • 1 $1.47
    • 10 $0.889
    • 100 $0.5869
    • 1000 $0.42774
    • 10000 $0.36337
    Buy Now
    Avnet Americas MM74HC540WM Bulk 7 Weeks, 4 Days 1
    • 1 $0.915
    • 10 $0.78
    • 100 $0.78
    • 1000 $0.529
    • 10000 $0.522
    Buy Now
    MM74HC540WM Tube 4 Weeks 1
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    MM74HC540WM Tube 12 Weeks 3,002
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.2359
    Buy Now
    Mouser Electronics MM74HC540WM 2,088
    • 1 $0.66
    • 10 $0.565
    • 100 $0.565
    • 1000 $0.416
    • 10000 $0.337
    Buy Now
    Newark MM74HC540WM Bulk 549 1
    • 1 $0.483
    • 10 $0.443
    • 100 $0.443
    • 1000 $0.409
    • 10000 $0.354
    Buy Now
    TME MM74HC540WM 84 1
    • 1 $1.34
    • 10 $1.2
    • 100 $1.09
    • 1000 $0.81
    • 10000 $0.81
    Buy Now
    Avnet Silica MM74HC540WM 13 Weeks 38
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Chip1Stop MM74HC540WM 4,294
    • 1 -
    • 10 -
    • 100 $0.523
    • 1000 $0.366
    • 10000 $0.264
    Buy Now
    MM74HC540WM 560
    • 1 -
    • 10 $0.3955
    • 100 $0.3955
    • 1000 $0.3294
    • 10000 $0.3294
    Buy Now
    EBV Elektronik MM74HC540WM 13 Weeks 38
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now

    M74HC540 Datasheets (18)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    M74HC540 STMicroelectronics OCTAL BUS BUFFER WITH 3 STATE OUTPUTS (INVERTED) Original PDF
    M74HC540 STMicroelectronics OCTAL BUS BUFFER WITH 3 STATE OUTPUTS (INVERTED) Original PDF
    M74HC540 STMicroelectronics HC540: INVERTED - HC541 NON INVERTED OCTAL BUS BUFFER WITH 3 STATE OUTPUTS Original PDF
    M74HC540B1 SGS-Thomson OCTAL BUS BUFFER (INVERTING) (3-STATE) / OCTAL BUS BUFFER (3-STATE) Scan PDF
    M74HC540B1N STMicroelectronics OCTAL BUS BUFFER INVERTING (3-STATE) / OCTAL BUS BUFFER (3-STATE) Scan PDF
    M74HC540B1R STMicroelectronics Octal Bus Buffer with 3 State Outputs (Inverted) Original PDF
    M74HC540B1R STMicroelectronics OCTAL BUS BUFFER WITH 3 STATE OUTPUTS HC540: INVERTED - HC541 NON INVERTED Original PDF
    M74HC540C1 SGS-Thomson OCTAL BUS BUFFER (INVERTING) (3-STATE) / OCTAL BUS BUFFER (3-STATE) Scan PDF
    M74HC540C1 STMicroelectronics OCTAL BUS BUFFER INVERTING (3-STATE) / OCTAL BUS BUFFER (3-STATE) Scan PDF
    M74HC540C1R STMicroelectronics OCTAL BUS BUFFER WITH 3 STATE OUTPUTS HC540: INVERTED - HC541 NON INVERTED Original PDF
    M74HC540F1 SGS-Thomson OCTAL BUS BUFFER (INVERTING) (3-STATE) / OCTAL BUS BUFFER (3-STATE) Scan PDF
    M74HC540F1 STMicroelectronics OCTAL BUS BUFFER INVERTING (3-STATE) / OCTAL BUS BUFFER (3-STATE) Scan PDF
    M74HC540F1R STMicroelectronics OCTAL BUS BUFFER WITH 3 STATE OUTPUTS HC540: INVERTED - HC541 NON INVERTED Original PDF
    M74HC540M1 STMicroelectronics OCTAL BUS BUFFER INVERTING (3-STATE) / OCTAL BUS BUFFER (3-STATE) Scan PDF
    M74HC540M1R STMicroelectronics OCTAL BUS BUFFER WITH 3 STATE OUTPUTS HC540: INVERTED - HC541 NON INVERTED Original PDF
    M74HC540M1R STMicroelectronics Octal Bus Buffer with 3 State Outputs (Inverted) Original PDF
    M74HC540RM13TR STMicroelectronics Octal Bus Buffer with 3 State Outputs (Inverted) Original PDF
    M74HC540TTR STMicroelectronics Octal Bus Buffer (3-State/Inv.) Original PDF

    M74HC540 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    hc541

    Abstract: HC540 M54HCXXXF1R M74HCXXXM1R
    Text: M54HC540/541 M74HC540/541 OCTAL BUS BUFFER WITH 3 STATE OUTPUTS HC540: INVERTED - HC541 NON INVERTED . . . . . . . . HIGH SPEED tPD = 10 ns TYP. at VCC = 5V LOW POWER DISSIPATION o ICC = 4 µA (MAX.) at TA = 25 C HIGH NOISE IMMUNITY VNIH = VINL = 28 % VCC (MIN.)


    Original
    PDF M54HC540/541 M74HC540/541 HC540: HC541 54/74LS540/541 M54HCXXXF1R M74HCXXXM1R M74HCXXXB1R M74HCXXXC1R M54/74HC540 HC540 M54HCXXXF1R M74HCXXXM1R

    Untitled

    Abstract: No abstract text available
    Text: M74HC540 OCTAL BUS BUFFER WITH 3 STATE OUTPUTS INVERTED • ■ ■ ■ ■ ■ ■ HIGH SPEED: tPD = 9ns (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC = 4µA(MAX.) at TA=25°C HIGH NOISE IMMUNITY: VNIH = V NIL = 28 % VCC (MIN.) SYMMETRICAL OUTPUT IMPEDANCE:


    Original
    PDF M74HC540 74HC540 M74HC541

    Untitled

    Abstract: No abstract text available
    Text: M74HC540 OCTAL BUS BUFFER WITH 3 STATE OUTPUTS INVERTED • ■ ■ ■ ■ ■ ■ HIGH SPEED: tPD = 9ns (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC = 4µA(MAX.) at TA=25°C HIGH NOISE IMMUNITY: VNIH = V NIL = 28 % VCC (MIN.) SYMMETRICAL OUTPUT IMPEDANCE:


    Original
    PDF M74HC540 74HC540 M74HC541

    M74HC540B1

    Abstract: 74HC540 DIP-20 M74HC540 M74HC540B1R M74HC540M1R M74HC540RM13TR M74HC540TTR M74HC541
    Text: M74HC540 OCTAL BUS BUFFER WITH 3 STATE OUTPUTS INVERTED • ■ ■ ■ ■ ■ ■ HIGH SPEED: tPD = 9ns (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC = 4µA(MAX.) at TA=25°C HIGH NOISE IMMUNITY: VNIH = V NIL = 28 % VCC (MIN.) SYMMETRICAL OUTPUT IMPEDANCE:


    Original
    PDF M74HC540 74HC540 M74HC541 M74HC540B1 DIP-20 M74HC540 M74HC540B1R M74HC540M1R M74HC540RM13TR M74HC540TTR

    74HC540

    Abstract: DIP-20 M74HC540 M74HC540B1R M74HC540M1R M74HC540RM13TR M74HC540TTR M74HC541
    Text: M74HC540 OCTAL BUS BUFFER WITH 3 STATE OUTPUTS INVERTED • ■ ■ ■ ■ ■ ■ HIGH SPEED: tPD = 9ns (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC = 4µA(MAX.) at TA=25°C HIGH NOISE IMMUNITY: VNIH = V NIL = 28 % VCC (MIN.) SYMMETRICAL OUTPUT IMPEDANCE:


    Original
    PDF M74HC540 74HC540 M74HC541 DIP-20 M74HC540 M74HC540B1R M74HC540M1R M74HC540RM13TR M74HC540TTR

    hc541

    Abstract: hc540 M54HCXXXF1R M74HCXXXM1R M74HCXXXC1R IC 541 M74HCXXXB1R
    Text: M54HC540/541 M74HC540/541 OCTAL BUS BUFFER WITH 3 STATE OUTPUTS HC540: INVERTED - HC541 NON INVERTED . . . . . . . . HIGH SPEED tPD = 10 ns TYP. at VCC = 5V LOW POWER DISSIPATION o ICC = 4 µA (MAX.) at TA = 25 C HIGH NOISE IMMUNITY VNIH = VINL = 28 % VCC (MIN.)


    Original
    PDF M54HC540/541 M74HC540/541 HC540: HC541 54/74LS540/541 M54HCXXXF1R M74HCXXXM1R M74HCXXXB1R M74HCXXXC1R M54/74HC540 hc540 M54HCXXXF1R M74HCXXXM1R M74HCXXXC1R IC 541 M74HCXXXB1R

    5555 FAIRCHILD optocoupler

    Abstract: MC74HC374N 74hc14n equivalent NC7S125M5 14069 HCF4541BEY APPLICATION HCF4013BE 4026 fairchild datasheet 14543 motorola Motorola DM74LS139N
    Text: R E L I A B L E . L O G I C . I N N O V A T I O N . Logic Cross-Reference Logic Cross-Reference 2003 Texas Instruments Printed in the U.S.A. by Texoma Business Forms, Durant, Oklahoma Printed on recycled paper. SCYB017A NEW First Revision Logic Cross-Reference


    Original
    PDF SCYB017A A010203 5555 FAIRCHILD optocoupler MC74HC374N 74hc14n equivalent NC7S125M5 14069 HCF4541BEY APPLICATION HCF4013BE 4026 fairchild datasheet 14543 motorola Motorola DM74LS139N

    74HC244 shift register

    Abstract: Dil-20 dil20 M74HC DIL-16 4 bit binary divider M74HC126 SO-16 M74HC00 M74HC04
    Text: LOGIC CIRCUITS HIGH SPEED CMOS M74HC SERIES FEATURES Symbol Parameter VCC Supply Voltage HC series HCT series Input Voltage Operating Temperature 74 Series Output Current Propagation delay time @ VCC = 4.5V, CL = 50pF VI TA IOL tpd Value Unit 2 to 6 4.5 to 5.5


    Original
    PDF M74HC 74HC244 M74HC00 M74HCT00 M74HC02 M74HCT02 M74HC03 M74HC04 M74HCT04 M74HCU04 74HC244 shift register Dil-20 dil20 DIL-16 4 bit binary divider M74HC126 SO-16 M74HC00 M74HC04

    CD4558

    Abstract: NC7S125 MC74F138N HCF4541 Motorola MC74HC251N 74ACT161 DHVQFN-20 74V1G08 SOT323/5 HCF4017 SN74ACT14DR
    Text: Logic Cross-Reference Introduction This Logic Cross-Reference for Buyers, Distribution Specialists and others with an interest in Logic will assist in finding a device made by Texas Instruments that is identical or similar to many of our competitors’ Logic products.


    Original
    PDF 74ABT16244 A010203 53001cov SCYB017 CD4558 NC7S125 MC74F138N HCF4541 Motorola MC74HC251N 74ACT161 DHVQFN-20 74V1G08 SOT323/5 HCF4017 SN74ACT14DR

    74ls74apc

    Abstract: HD74ls04p 74LVC1G04ady8 semiconductor AZ431BZ-AE1 HCF4060BE HEF4093BP datasheet free download ne5334 hd74hc132p dm74ls47n
    Text: Standard Linear and Logic Products Cross-Reference Introduction Notice This Standard Linear and Logic Products CrossReference will assist in finding a device made by Texas Instruments that is a drop-in or similar replacement to many of our competitors’ standard linear and logic products.


    Original
    PDF

    MC0628R

    Abstract: 40373 74hc14n equivalent 4046 application note philips HCF4060BE HCF4017BE SN74121 application note MC74HC373DW mc0628 HCF4053BE
    Text: R E L I A B L E . L O G I C . I N N O V A T I O N . Logic Cross-Reference Logic Cross-Reference 2003 Texas Instruments Printed in the U.S.A. by Texoma Business Forms, Durant, Oklahoma Printed on recycled paper. SCYB017A NEW First Revision Logic Cross-Reference


    Original
    PDF SCYB017A T74ALVC32374 74CBTLV16211 SN74CBTD16211 SN74SSTV16859 SN74CBTLV16211GRDR SN74ALVC16245AGRDR -SN74SSTV16859GKER MC0628R 40373 74hc14n equivalent 4046 application note philips HCF4060BE HCF4017BE SN74121 application note MC74HC373DW mc0628 HCF4053BE

    5555 FAIRCHILD optocoupler

    Abstract: DM74LS75N MC74HC373DW 74hc14n equivalent HCF4060BE 40373 NC7S125M5X datasheet 14543 motorola 14049 CD40106BE
    Text: R E L I A B L E . L O G I C . I N N O V A T I O N . Logic Cross-Reference Logic Cross-Reference 2003 Texas Instruments Printed in the U.S.A. by Texoma Business Forms, Durant, Oklahoma Printed on recycled paper. SCYB017A NEW First Revision Logic Cross-Reference


    Original
    PDF SCYB017A A010203 5555 FAIRCHILD optocoupler DM74LS75N MC74HC373DW 74hc14n equivalent HCF4060BE 40373 NC7S125M5X datasheet 14543 motorola 14049 CD40106BE

    Untitled

    Abstract: No abstract text available
    Text: TTiTEB? 0D4D225 3T1 • S 6 T H SbE » T - £ 2 -0 *1 M54HC540/541 M74HC540/541 S G S -T H O M S O N ■ IL IÊ in S O R O O Ê i HC540 OCTAL BUS BUFFER INVERTING 3-STATE HC541 OCTAL BUS BUFFER (3-STATE) S G S-THOMSON ■ HIGH SPEED tpD = 11 ns (TYP.) at V c c = 5V


    OCR Scan
    PDF 0D4D225 M54HC540/541 M74HC540/541 HC540 HC541 7TST537 0040EES M54/74HC540/541 HC540 HC541

    HC540

    Abstract: hc541
    Text: HS-CMOS 0 - { ¿ A <-< INTEGRATED CIRCUITS ,/ , M54HC540/541 M74HC540/541 •=4l / r -PR E LIM IN A R Y D A TA HC540 OCTAL BUS BUFFER (INVERTING) (3-STATE) HC541 OCTAL BUS BUFFER (3-STATE) DESCRIPTION T h e M 5 4/74 H C 5 40/5 41 are high sp e e d C M O S O C ­


    OCR Scan
    PDF M54HC540/541 M74HC540/541 HC540 HC541 M54/74HC540/541 M54/74HC540 M54/74HC541

    Gg550

    Abstract: No abstract text available
    Text: G ì SGS-THOMSON M54HC540/541 M74HC540/541 E L IO T « ! OCTAL BUS BUFFER WITH 3 STATE OUTPUTS HC540: INVERTED - HC541 NON INVERTED . HIGH SPEED tPD = 10 ns TYP. at Vcc = 5V . LOW POWER DISSIPATION Icc = 4 nA (MAX.) at Ta = 25 °C • HIGH NOISE IMMUNITY


    OCR Scan
    PDF M54HC540/541 M74HC540/541 HC540: HC541 54/74LS540/541 74HCXXXB1R M74HCXXXC1R M54/74HC HC540 005501b Gg550

    M74HC540P

    Abstract: 74HC540FP
    Text: M IT S U B IS H I HIGH SPEED CMOS M74HC540P/FP/DWP OCTAL 3-S TA T E IN V E R TIN G B U F F E R /L IN E D R IV E R /L IN E R E C EIVER DESCRIPTION T h e M 7 4 H C 5 4 0 is a sem ico nductor in teg rated circuit con­ PIN CONFIGURATION TOP VIEW sisting of 3 -s ta te inverting buffers each with eight in d e p e n ­


    OCR Scan
    PDF M74HC540P/FP/DWP G--06 M74HC540P 74HC540FP

    Untitled

    Abstract: No abstract text available
    Text: F Z 7 SG S TH O M SO N M54HC540/541 *7 M U OMflDM§ i[L[l^ )OMO gi_ M74HC540/541 HC540 OCTAL BUS BUFFER INVERTING (3-STATE) HC541 OCTAL BUS BUFFER (3-STATE) • HIGH SPEED tPD = 11 ns (TYP.) at VCc = 5V ■ LOW POWER DISSIPATION |c c = 4 nA (MAX.) at Ta = 25°C


    OCR Scan
    PDF M54HC540/541 M74HC540/541 HC540 HC541 54/74LS540/541 HC540 HC541 M54/74HC540/541

    hc541

    Abstract: Hc540 74hc540
    Text: / S T SGS-THOMSON M54HC540/541 [10 ^(mi(girm[](g§_ M74HC540/541 HC540 OCTAL BUS BUFFER INVERTING (3-STATE HC541 OCTAL BUS BUFFER (3-STATE) • HIGH SPEED tPD = 11 ns (TYP.) at VCc = 5V ■ LOW POWER DISSIPATION lCc = 4 ,iA (MAX.) at Ta = 25°C ■ HIGH NOISE IMMUNITY


    OCR Scan
    PDF M54HC540/541 M74HC540/541 HC540 HC541 54/74LS540/541 M54/74HC540/541 M54/74HC540/541 HC540 HC541 74hc540

    olivetti 286

    Abstract: olivetti encoder 16-LINE TO 4-LINE PRIORITY ENCODERS elettronici 474HC132 Structure of D flip-flop sgs-ates M74HC4017 M74HC126 RS flip-flop
    Text: BREAKING THE CMOS HIGH SPEED BARRIER speed, noise immunity and supply voltage range. This new family of high performance devices is being jointly developed and manufactured by SGS and Toshiba who between them have many years of production and marketing expertise in the field of


    OCR Scan
    PDF 4000B -M74HC14 74HC132 DIP14 DIP14 yM74HC42 M74HC138 M74HC139 /M74HC147 /M74HC148 olivetti 286 olivetti encoder 16-LINE TO 4-LINE PRIORITY ENCODERS elettronici 474HC132 Structure of D flip-flop sgs-ates M74HC4017 M74HC126 RS flip-flop