74ACT245M STMicroelectronics, 74ACT245M Datasheet

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74ACT245M

Manufacturer Part Number

74ACT245M

Description

OCTAL BUS TRANSCEIVER 3-STATE

Manufacturer

STMicroelectronics

Datasheet

1.74ACT245M.pdf (9 pages)

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BOSTOCK HK LIMITED

BOSTOCK HK LIMITED

Part Number:

74ACT245M

Manufacturer:

ST

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DESCRIPTION

The ACT245 is an advanced CMOS OCTAL BUS

TRANSCEIVER

sub-micron silicon gate and double-layer metal

wiring C

power

operation similar to equivalent Bipolar Schottky

TTL.

This IC is intended for two-way asynchronous

communication between data buses and the

PIN CONNECTION AND IEC LOGIC SYMBOLS

May 1999

HIGH SPEED: t

LOW POWER DISSIPATION:

I

COMPATIBLE WITH TTL OUTPUTS

V

50 TRANSMISSION LINE OUTPUT DRIVE

CAPABILITY

SYMMETRICAL OUTPUT IMPEDANCE:

|I

BALANCED PROPAGATION DELAYS:

t

OPERATING VOLTAGE RANGE:

V

PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 245

IMPROVED LATCH-UP IMMUNITY

CC

PLH

OH

IH

CC

= 8 A (MAX.) at T

= 2V (MIN) V

| = I

(OPR) = 4.5V to 5.5V

t

applications mantaining high

2

PHL

OL

MOS technology. It is ideal for low

= 24 mA (MIN)

PD

IL

(3-STATE)

= 5.5 ns (TYP.) at V

= 0.8V (MAX)

A

= 25

o

C

OCTAL BUS TRANSCEIVER (3-STATE)

fabricated

CC

= 5V

speed

with

direction of data trasmission is determined by

DIR input. The enable input G can be used to

disable the device so that the buses are

effectively isolated.

All inputs and outputs are equipped with

protection circuits against static discharge, giving

them 2KV ESD immunity and transient excess

voltage.

IT IS PROHIBITED TO APPLY A SIGNAL TO A

TERMINAL WHEN IT IS IN OUTPUT MODE

AND WHEN A BUS THERMINAL IS FLOATING

(HIGH IMPEDANCE STATE) IT IS REQUESTED

TO FIX THE INPUT LEVEL BY MEANS OF

EXTERNAL PULL

RESISTOR.

ORDER CODES :

(Plastic Package)

74ACT245M

74ACT245B

74ACT245T

B

DOWN

(TSSOP Package)

74ACT245

(Micro Package)

OR

T

M

PULL

UP

1/9

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