74AC245B datasheet(1/9 Pages) STMICROELECTRONICS

Il numero della parte	74AC245B

Spiegazioni elettronici	OCTAL BUS TRANSCEIVER WITH 3 STATE OUTPUTS (NON INVERTED)

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

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1/9

April 2001

s

HIGH SPEED: tPD = 4.5ns (TYP.) at VCC = 5V

s

LOW POWER DISSIPATION:

ICC = 4µA(MAX.) at TA=25°C

s

HIGH NOISE IMMUNITY:

VNIH = VNIL = 28 % VCC (MIN.)

s

50

Ω TRANSMISSION LINE DRIVING

CAPABILITY

s

SYMMETRICAL OUTPUT IMPEDANCE:

|IOH| = IOL = 24mA (MIN)

s

BALANCED PROPAGATION DELAYS:

tPLH ≅ tPHL

s

OPERATING VOLTAGE RANGE:

VCC (OPR) = 2V to 6V

s

PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 244

s

IMPROVED LATCH-UP IMMUNITY

DESCRIPTION

The 74AC245 is an advanced high-speed CMOS

OCTAL

BUS

TRANSCEIVER

(3-STATE)

fabricated

with

sub-micron silicon gate and

double-layer metal wiring C2MOS tecnology.

This IC is intended for two-way asynchronous

communication between data buses and the

direction of data transmission is determined by

DIR input. The enable input G can be used to

disable the device so that the buses are effectively

isolated..

All floating bus terminals during HIGH-Z state

must be held HIGH or LOW

All

inputs

and

outputs

are

equipped

with

protection circuits against static discharge, giving

them 2KV ESD immunity and transient excess

voltage.

74AC245

OCTAL BUS TRANSCEIVER

WITH 3 STATE OUTPUTS (NON INVERTED)

PIN CONNECTION AND IEC LOGIC SYMBOLS

ORDER CODES

PACKAGE

TUBE

T & R

DIP

74AC245B

SOP

74AC245M

74AC245MTR

TSSOP

74AC245TTR

TSSOP

DIP

SOP

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STMicroelectronics	74AC245B	80Kb / 8P	OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS NON INVERTED Apr-2001

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74AC245B Scheda tecnica(PDF) 1 Page - STMicroelectronics

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