M74HC643RM13TR View Datasheet(PDF) - STMicroelectronics

Part Name

Description

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M74HC643RM13TR

OCTAL BUS TRANSCEIVER WITH 3 STATE OUTPUTS (INVERTING/NON INVERTING)

STMicroelectronics 

M74HC643

OCTAL BUS TRANSCEIVER

WITH 3 STATE OUTPUTS (INVERTING/NON INVERTING)

s HIGH SPEED:

tPD = 10ns (TYP.) at VCC = 6V

s LOW POWER DISSIPATION:

ICC = 4µA(MAX.) at TA=25°C

s HIGH NOISE IMMUNITY:

VNIH = VNIL = 28 % VCC (MIN.)

s SYMMETRICAL OUTPUT IMPEDANCE:

|IOH| = IOL = 6mA (MIN)

s BALANCED PROPAGATION DELAYS:

tPLH ≅ tPHL

s WIDE OPERATING VOLTAGE RANGE:

VCC (OPR) = 2V to 6V

s PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 643

DESCRIPTION

The 74HC643 is an advanced high-speed CMOS

OCTAL BUS TRANSCEIVER (3-STATE)

fabricated with silicon gate C2MOS technology.

This IC is intended for two-way asynchronous

communication between data buses, and the

direction of data transmission is determined by

DIP

SOP

TSSOP

ORDER CODES

PACKAGE

TUBE

DIP

SOP

TSSOP

M74HC643B1R

M74HC643M1R

T&R

M74HC643RM13TR

M74HC643TTR

DIR input. The enable input G can be used to

disable the device so that the buses are effectively

isolated.

All inputs are equipped with protection circuits

against static discharge and transient excess

voltage.

PIN CONNECTION AND IEC LOGIC SYMBOLS

August 2001

1/11

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