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

    SP3494 Search Results

    SF Impression Pixel

    SP3494 Price and Stock

    MaxLinear Inc SP3494EN-L

    IC TRANSCEIVER HALF 1/1 8SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SP3494EN-L Tube 622 1
    • 1 $1.9
    • 10 $1.398
    • 100 $1.9
    • 1000 $1.02134
    • 10000 $0.9413
    		Buy Now
    Mouser Electronics SP3494EN-L 329
    • 1 $1.9
    • 10 $1.4
    • 100 $1.08
    • 1000 $1.02
    • 10000 $0.909
    		Buy Now
    Verical SP3494EN-L 294 98
    • 1 -
    • 10 -
    • 100 $1.1072
    • 1000 $0.9746
    • 10000 $0.8745
    		Buy Now
    Arrow Electronics SP3494EN-L 294 5 Weeks 98
    • 1 -
    • 10 -
    • 100 $1.1072
    • 1000 $0.9746
    • 10000 $0.8745
    		Buy Now

    MaxLinear Inc SP3494CN-L

    IC TRANSCEIVER HALF 1/1 8SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SP3494CN-L Tube
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now

    MaxLinear Inc SP3494CN-L-TR

    IC TRANSCEIVER HALF 1/1 8SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SP3494CN-L-TR Digi-Reel 1
    • 1 $1.85
    • 10 $1.85
    • 100 $1.85
    • 1000 $1.85
    • 10000 $1.85
    		Buy Now
    SP3494CN-L-TR Reel 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.9368
    		Buy Now
    SP3494CN-L-TR Cut Tape 1
    • 1 $1.85
    • 10 $1.85
    • 100 $1.85
    • 1000 $1.85
    • 10000 $1.85
    		Buy Now

    MaxLinear Inc SP3494EN-L-TR

    IC TRANSCEIVER HALF 1/1 8SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SP3494EN-L-TR Reel 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.96254
    		Buy Now

    MaxLinear Inc SP3494CN-L/TR

    RS-422/RS-485 Interface IC 3.3V Slew Ltd RS485/ RS422 2.5Mbps Half
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Mouser Electronics SP3494CN-L/TR 5,939
    • 1 $2
    • 10 $1.89
    • 100 $1.89
    • 1000 $1.48
    • 10000 $0.925
    		Buy Now
    Find more SP3494 price and stock on Findchips.com

    SP3494 Datasheets (20)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    SP3494 Sipex +3.3V Low Power RS-485-RS-422 Transceivers Original PDF
    SP3494CN Sipex +3.3 V Low Power RS-485/RS-422 Transceiver Original PDF
    SP3494CN Sipex +3.3V Low Power Slew Rate Limited RS-485/RS-422 Transceivers Original PDF
    SP3494CN-L Exar Interface - Drivers, Receivers, Transceivers, Integrated Circuits (ICs), IC TXRX RS485/RS422 LP 8NSOIC Original PDF
    SP3494CN-L Sipex +3.3V Low Power RS-485/RS-422 Transceivers Original PDF
    SP3494CN-L/TR Exar Interface - Drivers, Receivers, Transceivers, Integrated Circuits (ICs), IC TXRX RS485/RS422 LP 8NSOIC Original PDF
    SP3494CN-L/TR MaxLinear Integrated Circuits (ICs) - Interface - Drivers, Receivers, Transceivers - IC TXRX RS485/RS422 LP 8SOIC Original PDF
    SP3494CN-L/TR Sipex +3.3V Low Power RS-485/RS-422 Transceivers Original PDF
    SP3494CN/TR Sipex +3.3V Low Power RS-485/RS-422 Transceivers Original PDF
    SP3494CP Sipex +3.3 V Low Power RS-485/RS-422 Transceiver Original PDF
    SP3494CP Sipex +3.3V Low Power Slew Rate Limited RS-485/RS-422 Transceivers Original PDF
    SP3494EN Sipex +3.3 V Low Power RS-485/RS-422 Transceiver Original PDF
    SP3494EN Sipex +3.3V Low Power Slew Rate Limited RS-485/RS-422 Transceivers Original PDF
    SP3494EN-L Exar Interface - Drivers, Receivers, Transceivers, Integrated Circuits (ICs), IC TXRX RS485/RS422 LP 8NSOIC Original PDF
    SP3494EN-L Sipex +3.3V Low Power RS-485/RS-422 Transceivers Original PDF
    SP3494EN-L/TR Exar Interface - Drivers, Receivers, Transceivers, Integrated Circuits (ICs), IC TXRX RS485/RS422 LP 8NSOIC Original PDF
    SP3494EN-L/TR Sipex +3.3V Low Power RS-485/RS-422 Transceivers Original PDF
    SP3494EN/TR Sipex +3.3V Low Power RS-485/RS-422 Transceivers Original PDF
    SP3494EP Sipex +3.3V Low Power Slew Rate Limited RS-485/RS-422 Transceivers Original PDF
    SP3494EP Sipex +3.3 V Low Power RS-485/RS-422 Transceiver Original PDF

    SP3494 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    75179

    Abstract: MAX348 75176
    Text: SP3493/SP3494 +3.3V Low Power Slew Rate Limited RS-485/RS-422 Transceivers features description • Operates From a Single +3.3V Supply ■ Interoperable with +5V Logic ■ +200mV Receiver Input Sensitivity ■ Slew-Rate Limited for Errorless Data Transmission to 250kbps


    Original     		PDF SP3493/SP3494 RS-485/RS-422 200mV 250kbps SP3494) MAX3488, LTC490 SP3493) MAX3486 75179 MAX348 75176

    75176

    Abstract: LTC490 MAX3486 MAX3488 SP3481 SP3490 SP3493 SP3494
    Text: SP3493/SP3494 +3.3V Low Power Slew Rate Limited RS-485/RS-422 Transceivers • Operates From A Single +3.3V Supply ■ Interoperable With +5V Logic ■ +200mV Receiver Input Sensitivity ■ Slew-Rate Limited For Errorless Data Transmission to 250Kbps ■ -7V to +12V Common-Mode Input


    Original     		PDF SP3493/SP3494 RS-485/RS-422 200mV 250Kbps SP3494) MAX3488, LTC490 SP3493) MAX3486 75176 LTC490 MAX3488 SP3481 SP3490 SP3493 SP3494

    SP3494

    Abstract: MAX3486 RS-422 Transceiver LTC490 MAX3488 SP3481 SP3490 SP3493
    Text: SP3493/SP3494 +3.3V Low Power RS-485/RS-422 Transceivers • Operates From A Single +3.3V Supply ■ Interoperable With +5V Logic ■ +200mV Receiver Input Sensitivity ■ -7V to +12V Common-Mode Input Voltage Range ■ Devices Allow Up To 32 Transceivers


    Original     		PDF SP3493/SP3494 RS-485/RS-422 200mV SP3494) MAX3488, LTC490 SP3493) MAX3486 SP3494 RS-422 Transceiver LTC490 MAX3488 SP3481 SP3490 SP3493

    sp3481

    Abstract: EXAR Function generator
    Text: SP3494 +3.3V Low Power RS-485/RS-422 Transceiver • Operates From A Single +3.3V Supply • Interoperable With +5.0V Logic • +/-200mV Receiver Input Sensitivity • -7V to +12V Common-Mode Input Voltage Range • Allows Up To 32 transceivers On The Serial Bus


    Original     		PDF SP3494 RS-485/RS-422 /-200mV MAX3486 SP3494 RS-485 RS-422 SP3481 EXAR Function generator

    transistor working principle

    Abstract: CAN bus principle MAR7 SP3494
    Text: SP3494: FAQ Solved by TM Sipex Part: SP3494 Date: Mar7-07 Question: The client was an engineering firm specialized in industrial control devices, with an ongoing project using the SP3494. It is a bus based on point to point principle, in each unit in the bus


    Original     		PDF SP3494: SP3494 Mar7-07 SP3494. SP3494s SP3494CN-0406 SP3494CN0343. 38400kbs /-12V. transistor working principle CAN bus principle MAR7 SP3494

    LTC490

    Abstract: MAX3486 MAX3488 SP3481 SP3490 SP3493 SP3494 4953 SOIC-8
    Text: SP3493/SP3494 +3.3V Low Power RS-485/RS-422 Transceivers • Operates From A Single +3.3V Supply ■ Interoperable With +5V Logic ■ +200mV Receiver Input Sensitivity ■ -7V to +12V Common-Mode Input Voltage Range ■ Devices Allow Up To 32 Transceivers


    Original     		PDF SP3493/SP3494 RS-485/RS-422 200mV SP3494) MAX3488, LTC490 SP3493) MAX3486 LTC490 MAX3488 SP3481 SP3490 SP3493 SP3494 4953 SOIC-8

    5V and 12V RS-232, 2 Drivers, 2 Receivers

    Abstract: capacitor cross reference voltage regulator 5 pin SPX29302U5 RS-485 maxim MAX3491EESA DS26LS31TM LP2950ACN-5.0 LP2950CZ-3.3 equivalent AAT4625
    Text: Product Cross Reference Guide January 2004 2004 Sipex Cross Reference Guide Table of Contents Manufacturers Analog Devices AnalogicTech Astec Bay Linear Cal Logic Dallas Semiconductor Exar Fairchild Harris International Rectifier Intersil Linear Technology


    Original     		PDF OT-23 TPS61040 SP6690 TPS61040DBV SP4446EK TPS61041 SP4446 5V and 12V RS-232, 2 Drivers, 2 Receivers capacitor cross reference voltage regulator 5 pin SPX29302U5 RS-485 maxim MAX3491EESA DS26LS31TM LP2950ACN-5.0 LP2950CZ-3.3 equivalent AAT4625

    MAX3234

    Abstract: maxim dallas 2501 jtag gd75232 DALLAS 2501 jtag PL-2303 LGA 775 SOCKET PIN LAYOUT SN75176 PL-2303 SN75179 application MAX490 schematic
    Text: R E A L W O R L D S I G N A L P TM R O C E S S I N G Interface Selection Guide 2Q 2004 Table of Contents Introduction .3 Data Line Circuits High-Speed Interconnect LVDS, xECL, CML .4


    Original     		PDF RS-485/422. RS-232. MAX3234 maxim dallas 2501 jtag gd75232 DALLAS 2501 jtag PL-2303 LGA 775 SOCKET PIN LAYOUT SN75176 PL-2303 SN75179 application MAX490 schematic

    DAN190

    Abstract: RS485 transceiver SP3485 XR17D158 RS-485 SP481E XR16L784 XR16L2750 ST16C650A XR16C2850
    Text: DAN190 EXAR UARTS IN RS-485 APPLICATIONS April 2008 EXAR UARTS IN RS-485 APPLICATIONS 1.0 INTRODUCTION This application note discusses the benefits of Exar's patented Automatic RS-485 Half-Duplex Direction Control feature patent #6,765,626 available in Exar's enhanced UARTs and how this feature simplifies the


    Original     		PDF DAN190 RS-485 DAN190 RS485 transceiver SP3485 XR17D158 SP481E XR16L784 XR16L2750 ST16C650A XR16C2850

    SP3070

    Abstract: 3074E 75176 applications notes 75179 8 pin diagram of max 485 SP3070E SP3071E SP3078EEN-L SP3485 SP3072E
    Text: SP3070E - SP3078E Family ±15kV ESD-Protected, 3.3V, 1/8 Load, Failsafe RS-485/RS422 Transceivers Features • ±15kV ESD protection for RS485 pins ■ 3.3V low-power operation ■ Advanced Receiver-failsafe protection for open, shorted or terminated lines


    Original     		PDF SP3070E SP3078E RS-485/RS422 RS485 SP3070E, SP3070E-72E: 250kbps SP3073E-75E: SP3070E-SP3078E SP3070 3074E 75176 applications notes 75179 8 pin diagram of max 485 SP3071E SP3078EEN-L SP3485 SP3072E

    sp3072

    Abstract: SP3070E SP3071E SP3072E SP3074E SP3075E SP3077E SP3078E
    Text: SP3070E - SP3078E Family ±15kV ESD-Protected, 3.3V, 1/8 Load, Failsafe RS-485/RS422 Transceivers FEATURES • ±15kV ESD protection for RS485 pins ■ 3.3V low-power operation ■ Advanced Receiver-failsafe protection for open, shorted or terminated lines


    Original     		PDF SP3070E SP3078E RS-485/RS422 RS485 SP3072E SP3075E SP3078E SP3071E SP3074E SP3077E sp3072 SP3071E SP3072E SP3074E SP3075E SP3077E

    FSQ510 Equivalent

    Abstract: BTA12 6008 bta16 6008 ZIGBEE interface with AVR ATmega16 Precision triac control thermostat thyristor t 558 f eupec gw 5819 diode transistor a564 A564 transistor BSM25GP120 b2
    Text: SEMICONDUCTORS MCU/MPU/DSP Atmel. . . . . . . . . 167, 168, 169, 170, 171, 172 Blackhawk. . . . . . . . . . . . . . . . . . . . . . . . . 173 Cyan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 Cypress. . . . . . . . . . . . . . . 175, 176, 177, 178


    Original     		PDF GP-20) FSQ510 Equivalent BTA12 6008 bta16 6008 ZIGBEE interface with AVR ATmega16 Precision triac control thermostat thyristor t 558 f eupec gw 5819 diode transistor a564 A564 transistor BSM25GP120 b2

    Arduino Mega2560

    Abstract: 13001 S 6D TRANSISTOR arduino uno rev 3 agilent optical encoder 9988 MZ 13001 TRANSISTOR arduino mega 2650 skiip 613 gb 123 ct arduino sound sensor module pic arduino nano mc34063l
    Text: ND3% BASE1 XXXX2108-0010-1-P 10 TSQ: 3001 CMS: CMS-USM TS host OP: NN COMP: 15-07-11 Hour: 13:07 TS:TS date TS time MCUS, MPUS, DSPS & DEVELOPMENT TOOLS Find Datasheets Online 8-BIT MCUS & DEVELOPMENT TOOLS 1 PSoC 3 DEVELOPMENT KITS ARDUINO MCU DEVLOPMENT PLATFORM


    Original     		PDF CY8C38 CY8C29 incl795 12T9797 12T9804 12T9803 12T9800 12T9802 12T9801 12T9805 Arduino Mega2560 13001 S 6D TRANSISTOR arduino uno rev 3 agilent optical encoder 9988 MZ 13001 TRANSISTOR arduino mega 2650 skiip 613 gb 123 ct arduino sound sensor module pic arduino nano mc34063l

    HDMI TO VGA MONITOR PINOUT

    Abstract: HDMI to vga pinout china DVD player card circuit diagram serdes hdmi optical fibre mp3 player circuit diagram by using msp430 PL-2303 SN75179 application VGA TO HDMI PINOUT meter-bus HDMI cat5
    Text: TM Technology for Innovators Interface Selection Guide 4Q 2006 2 ➔ Interface Selection Guide Table of Contents Introduction 3 LVDS, xECL, CML . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Multipoint-LVDS M-LVDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8


    Original     		PDF RS-485/422 RS-232 HDMI TO VGA MONITOR PINOUT HDMI to vga pinout china DVD player card circuit diagram serdes hdmi optical fibre mp3 player circuit diagram by using msp430 PL-2303 SN75179 application VGA TO HDMI PINOUT meter-bus HDMI cat5

    cel8240

    Abstract: CEL8240HF10LX CEL8240HF10LXC SP3483CN-L SP3082EEN-L CEL8240HF10 QMI519 XR3178EID-F XR3175EID-F SP483EEN-L/TR
    Text: PRODUCT CHANGE NOTICE PCN PART NUMBER(S): PCN No.: 10-0311-01 Refer to Attachment 1 DATE: March 23, 2010 PART DESCRIPTION: See www.exar.com LEVEL OF CHANGE: [ ] Level I, Customer Approval. [X] Level II, Customer Information. PRODUCT ATTRIBUTE AFFECTED: [ ]


    Original     		PDF XR3177EID-F XR3177EIDTR-F XR3172EID-F XR3172EIDTR-F XR3175EID-F XR3175EIDTR-F XR3178EID-F XR3178EIDTR-F XR5487EID-F XR5487EIDTR-F cel8240 CEL8240HF10LX CEL8240HF10LXC SP3483CN-L SP3082EEN-L CEL8240HF10 QMI519 XR3178EID-F XR3175EID-F SP483EEN-L/TR

    Ablebond 84-1*SR4

    Abstract: Ablebond 84-1LMISR4 ablebond 8290 84-1lmisr4 Ablebond SUMITOMO g600 Sumitomo 6730B SP491ECN-L SP3232EEN-L sp26lv431
    Text: PRODUCT CHANGE NOTICE PCN PART NUMBER(S): PCN No.: 09-0911-01 REFER TO ATTACHMENT A DATE: December 7, 2009 PART DESCRIPTION: See www.exar.com LEVEL OF CHANGE: [ ] Level I, Customer Approval. [X ] Level II, Customer Information. PRODUCT ATTRIBUTE AFFECTED:


    Original     		PDF SOICN-14 SOICN-16 6730B-L 84-1LMISR4 Abl691AEN-L/TR SP26LV432CN-L SP26LV432CN-L/TR SP26LV431CN-L SP26LV431CN-L/TR Ablebond 84-1*SR4 Ablebond 84-1LMISR4 ablebond 8290 84-1lmisr4 Ablebond SUMITOMO g600 Sumitomo 6730B SP491ECN-L SP3232EEN-L sp26lv431

    tmds specification

    Abstract: ADM2209 HDMI TO VGA MONITOR PINOUT HVGA TFT LCD driver VMEH22501 MAX202 circuit diagram tlk10021 rs422 msp430 diagram LG LCD TV circuits PL-2303
    Text: 接口选择指南 2006 年第四季度 2 接口选择指南 目录 3 绪论 下载最新的模拟应用 LVDSxECL、CML（低电压差分信号传输、发射级耦合逻辑、电流模式逻辑）………4 期刊 以及过刊 ，让 多点式低电压差分信号传输 (M-LVDS) ……………………………………………………8


    Original     		PDF RS-485/422 RS-232. tmds specification ADM2209 HDMI TO VGA MONITOR PINOUT HVGA TFT LCD driver VMEH22501 MAX202 circuit diagram tlk10021 rs422 msp430 diagram LG LCD TV circuits PL-2303

    1A145-016V-001RG\TR

    Abstract: 1N478A.TR RB070M-30 TR SP6654 SP208EH SP26LV432 SP26LV431 SPX29152
    Text: February 28, 2007 Dear Valued Exar Customer: The purpose of this letter is to formally announce Exar’s plan to obsolete products which have had little to zero demand over the last 24 months. Attached you will find two lists: List 1 – includes those devices that we have been supplying in either traditional tin/lead or lead-free lead


    Original     		PDF SPX385M1-1-2 SPX3940AU-1-8 SPX3940AU-2-5 SPX3940AU-5-0 SPX3940AU-L-1-8 SPX3940U-2-5 SPX3940U-3-3 SPX3940U-L-5-0 SPX4041M SPX4041M-L 1A145-016V-001RG\TR 1N478A.TR RB070M-30 TR SP6654 SP208EH SP26LV432 SP26LV431 SPX29152

    SP3070E

    Abstract: SP3071E SP3072E SP3074E SP3075E SP3077E SP3078E
    Text: SP3070E - SP3078E Family ±15kV ESD-Protected, 3.3V, 1/8 Load, Failsafe RS-485/RS422 Transceivers Features • ±15kV ESD protection for RS485 pins ■ 3.3V low-power operation ■ Advanced Receiver-failsafe protection for open, shorted or terminated lines


    Original     		PDF SP3070E SP3078E RS-485/RS422 RS485 SP3070E, SP3070E-72E: 250kbps SP3073E-75E SP3070E-SP3078E SP3071E SP3072E SP3074E SP3075E SP3077E

    4x4 matrix keypad and microcontroller

    Abstract: RGB to vga Converter intersil LGA 775 Socket PIN layout PL-2303 LVDS to MIPI CSI HDMI TO VGA MONITOR PINOUT rs 485 multidrop full duplex master slave microcontroller serdes 8b 10b mipi diagram LG LCD TV circuits MC100LVEL23
    Text: I nt er fa Interface Guide ce 1394 CAN Crosspoint Display ESD/EMI I²C Isolation LVDS/M-LVDS The Real World Optoelectronics Temperature PCIe Position RS232/422/485 Logic Low Power RF Pressure Power Management Speed Flow SerDes Sound UARTs RF Wave USB Data


    Original     		PDF RS232/422/485 4x4 matrix keypad and microcontroller RGB to vga Converter intersil LGA 775 Socket PIN layout PL-2303 LVDS to MIPI CSI HDMI TO VGA MONITOR PINOUT rs 485 multidrop full duplex master slave microcontroller serdes 8b 10b mipi diagram LG LCD TV circuits MC100LVEL23

    DS26LS31TM

    Abstract: LT1180CS DS75176BN lt1004cz SP574BKP SP1674BKP MAX208EAG ad574ajn AD674ATD/883B IC LTC489CN
    Text: Sipex Cross Reference Material Older Product Cross Reference Material To assist customers in finding crosses to obsolete parts. SIPEX Cross Reference Copyright 2006 Sipex Corporation Sipex Cross Reference Material This file is a compilation of 2 documents:


    Original     		PDF SP490CN SP490ECN SP490CS SP490ECP SP490Exx RS-485 TL3695D TL3695P SP485RCN SP485CN DS26LS31TM LT1180CS DS75176BN lt1004cz SP574BKP SP1674BKP MAX208EAG ad574ajn AD674ATD/883B IC LTC489CN

    sil 9024

    Abstract: sil 9002 2418E SP3485EN-L 144971 6724E sp3485e 1682e 891045E 7860E
    Text: Product Characterization Report for the SP3485 Family of Products Revision 2 Prepared By: Velvet Doung & Greg West Date: Aug 16, 2006 SP3485 Product Family Characterization Report Table of Contents Section Introduction Characterization Procedure Data Summary for Key Parameters


    Original     		PDF SP3485 SP3485 char33E-03 000E-03 418E-03 000E-03 276E-03 sil 9024 sil 9002 2418E SP3485EN-L 144971 6724E sp3485e 1682e 891045E 7860E

    SP504

    Abstract: Half Duplex RS-485 Transceivers transceiver rs232 driver receiver sp3490 loopback SP208EH SP332
    Text: 5.0V RS-232 Serial Transceivers TX/RX CONFIGURATION Part Number I FEATURES No. No. No. Wakeup Receiver External TTL Min Data Drivers Receivers Receivers Disable Cap Capacitors Shutdown ESD Tristate Rate Comments SP200 5 SP202E 2 2 SP204 4 SP205 ✔ 0.1µF


    Original     		PDF RS-232 SP200 SP202E SP204 SP205 SP205B SP206 SP206B SP207 SP207B SP504 Half Duplex RS-485 Transceivers transceiver rs232 driver receiver sp3490 loopback SP208EH SP332

    maxim dallas 2501

    Abstract: jtag PL-2303 DALLAS 2501 RS-485 spice PL-2303 goldstar GM16c550 MC34051 circuit diagram of MAX232 connection to pic goldstar scheme jtag gd75232
    Text: TM Technology for Innovators Interface Selection Guide 3Q 2005 2 ➔ Interface Selection Guide Table of Contents Introduction 3 LVDS, xECL, CML . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Multipoint-LVDS M-LVDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8


    Original     		PDF RS-485/422 RS-232 SSZT009B maxim dallas 2501 jtag PL-2303 DALLAS 2501 RS-485 spice PL-2303 goldstar GM16c550 MC34051 circuit diagram of MAX232 connection to pic goldstar scheme jtag gd75232