PCA9614DPZ datasheet(2/28 Pages) NXP

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NXP Semiconductors

PCA9614

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

VDD(A)1

SCL

SDA

PCA9614

aaa-011060

dI2C-bus

(differential I2C-bus,

1 of 2 lines shown)

twisted-pair cable

single-ended

I2C-bus

PCA9614

SCL

SDA

GND1

GND2

VDD(A)2

single-ended

I2C-bus

VDD(B)

Figure 1. SMBus/I2C-bus translation to dI2C-bus and back to SMBus/I2C-bus

2 Features and benefits

• New dI2C-bus buffers offer improved resistance to system noise and ground offset up

to 1⁄2 of supply voltage

• 2 channel dI2C (differential I2C) to Fm+ single-ended buffer operating up to 1 MHz with

30 mA SDA/SCL drive capability

• Compatible with I2C-bus Standard/Fast-mode and SMBus, Fast-mode Plus up to 1

MHz

• Active HIGH (internal pull-up resistor) Enable disables devices to high-impedance state

• Single-ended I2C-bus on card side up to 540 pF

• Differential I2C-bus on cable side supporting multi-drop bus

– Maximum cable length: 3 m (approximately 10 feet) (longer at lower frequency)

– dI2C output: 1.5 V differential output with nominal terminals

– Differential line impedance (user defined): 100 Ω nominal suggested

– Receive input sensitivity: ±200 mV

– Hysteresis: ±30 mV typical

– Input impedance: high-impedance (1 MΩ typical)

– Receive input voltage range: -0.5 V to +5.5 V

• Lock-up free operation

• Supports arbitration and clock stretching across the dI2C-bus buffers

• Powered-off and powering-up high-impedance I2C-bus pins

• Operating supply voltage (VDD(A)) range of 2.3 V to 5.5 V with single-ended side 5.5 V

tolerant

• Differential I2C-bus operating supply voltage (VDD(B)) range of 3.0 V to 5.5 V with 5.5 V

tolerant. Best operation is at 5 V.

• ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per

JESD22-C101

• Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA

• Package offering: TSSOP10

PCA9614

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 2 — 21 September 2021

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