PCA9614

2-channel multipoint Fast-mode Plus differential I2C-bus buffer

ETC

PCA9614DP

2通道多点超快速模式差分I²C总线缓冲器; • New dI2C-bus buffers offer improved resistance to system noise and ground offset upto 1⁄2 of supply voltage\n• 2 channel dI²C (differential I²C) to Fm+ single-ended buffer operating up to 1 MHz with30 mA SDA/SCL drive capability\n• Compatible with I²C-bus Standard/Fast-mode and SMBus, Fast-mode Plus up to1 MHz\n• Active HIGH (internal pull-up resistor) Enable disables devices to high-impedancestate\n• Single-ended I²C-bus on card side up to 540 pF\n• Differential I²C-bus on cable side supporting multi-drop bus• Maximum cable length: 3 m (approximately 10 feet) (longer at lower frequency)\n• dI²C output: 1.5 V differential output with nominal terminals\n• Differential line impedance (user defined): 100 Ω nominal suggested\n• Receive input sensitivity: ±200 mV\n• Hysteresis: ±30 mV typical\n• Input impedance: high-impedance (1 MΩ typical)\n• Receive input voltage range: ‑0.5 V to +5.5 V\n• Lock-up free operation\n• Supports arbitration and clock stretching across the dI²C-bus buffers\n• Powered-off and powering-up high-impedance I²C-bus pins\n• Operating supply voltage (VDD(A)) range of 2.3 V to 5.5 V with single-ended side 5.5 Vtolerant\n• Differential I²C-bus operating supply voltage (VDD(B)) range of 3.0 V to 5.5 V with5.5 V tolerant. Best operation is at 5 V.\n• ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM perJESD22-C101\n• Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA\n• Package offering: TSSOP10\n;

The PCA9614 is a Fast-mode Plus (Fm+) SMBus/I²C-bus buffer that extends the normalsingle-ended SMBus/I²C-bus through electrically noisy environments using a differentialSMBus/I²C-bus (dI²C) physical layer, which is transparent to the SMBus/I²C-bus protocollayer. It consists of two single-ended to differential driver channels for the SCL (serialclock), SDA (serial data).\nThe use of differential transmission lines between identical dI²C bus buffers removeselectrical noise and common-mode offsets that are present when signal lines must passbetween different voltage domains, are bundled with hostile signals, or run adjacent toelectrical noise sources, such as high energy power supplies and electric motors.\nThe SMBus/I²C-bus was conceived as a simple slow speed digital link for short runs,typically on a single PCB or between adjacent PCBs with a common ground connection.Applications that extend the bus length or run long cables require careful design topreserve noise margin and reject interference.\nThe dI²C-bus buffers were designed to solve these problems and are ideally suited forrugged high noise environments and/or longer cable applications, allow multiple slaves,and operate at bus speeds up to 1 MHz clock rate. Cables can be extended to at leastthree meters (3 m), or longer cable runs at lower clock speeds. The dI²C-bus buffers arecompatible with existing SMBus/I2C-bus devices and can drive Standard, Fast-mode, andFast-mode Plus devices on the single-ended side.\nSignal direction is automatic and requires no external control. To prevent bus latch-up theI²C-bus side employs static level offset. Take care when connecting the PCA9614 to otherSMBus/I²C-bus buffers that do not operate with other static level offset bus buffers.\nThese devices are a bridge between the normal 2-wire single-ended wired-ORSMBus/I²C-bus and the 4-wire dI²C-bus.\nThe PCA9614 has two supply voltages, VDD(A) and VDD(B). VDD(A), the card side supply,only serves as a reference and ranges from 2.3 V to 5.5 V. VDD(B), the line side supply,serves as the majority supply for circuitry, and ranges from 3.0 V to 5.5 V.\n

ETC

PCA9614DP

丝印：P9614；Package：TSSOP10；2-channel multipoint Fast-mode Plus differential I2C-bus buffer

ETC

PCA9614DP118

2-channel multipoint Fast-mode Plus differential I2C-bus buffer

ETC

PCA9614DPZ

2-channel multipoint Fast-mode Plus differential I2C-bus buffer

ETC

PE9614

75OhmNMaletoMiniSMBJackAdapter

PS9614

NECsHIGHNOISEREDUCTIONHIGHSPEEDDIGITALOUTPUTTYPE8PINDIPOPTOCOUPLER

DESCRIPTION NECsPS9614andPS9614LareopticallycoupledisolatorscontainingaGaAIAsLEDonthelightemittingdiode(input)sideandaphotodiodeandasignalprocesingcircuitonthedetector(output)sideononechip.ThePS9614isinaplasticDIP(DualIn-linePackage)andthePS9614Lis

PS9614

NECsHIGHNOISEREDUCTIONHIGHSPEEDDIGITALOUTPUTTYPE8PINDIPOPTOCOUPLER

PS9614

HIGHNOISEREDUCTION,HIGHSPEEDDIGITALOUTPUTTYPE8-PINDIPPHOTOCOUPLER

DESCRIPTION ThePS9614andPS9614LareopticallycoupledisolatorscontainingaGaAlAsLEDontheinputsideandaphoto diodeandasignalprocessingcircuitontheoutputsideononechip. ThePS9614isinaplasticDIP(DualIn-linePackage)andthePS9614Lisleadbendingtype(Gull-wing)f

PS9614L

NECsHIGHNOISEREDUCTIONHIGHSPEEDDIGITALOUTPUTTYPE8PINDIPOPTOCOUPLER