CAT9554 datasheet(5/16 Pages) ONSEMI

Part #	CAT9554

Description	8-bit I짼C and SMBus I/O Port with Interrupt

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Manufacturer	ONSEMI [ON Semiconductor]

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CAT9554, CAT9554A

5

Doc. No. MD-9002, Rev. F

Characteristics subject to change without notice

A.C. TEST CONDITIONS

Input Rise and Fall time

≤ 10ns

CMOS Input Voltages

0.2VCC to 0.8VCC

CMOS Input Reference Voltages

0.3VCC to 0.7VCC

TTL Input Voltages

0.4V to 2.4V

TTL Input Reference Voltages

0.8V, 2.0V

Output Reference Voltages

0.5VCC

Output Load: SDA, INT

¯¯¯

Current Souce IOL = 3mA; CL = 100pF

Output Load: I/Os

Current Source: IOL/IOH = 10mA; CL = 50pF

Figure 1. I²C Serial Interface Timing

tHIGH

SCL

SDA IN

SDA OUT

tLOW

tF

tLOW

tR

tBUF

tSU:STO

tSU:DAT

tHD:DAT

tHD:STA

tSU:STA

tAA

tDH

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