74VHCT240AT datasheet(1/8 Pages) STMICROELECTRONICS

Il numero della parte	74VHCT240AT

Spiegazioni elettronici	OCTAL BUS BUFFER WITH 3 STATE OUTPUTS INVERTED

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

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74VHCT240A

OCTAL BUS BUFFER

WITH 3 STATE OUTPUTS (INVERTED)

August 1999

s

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

s

LOW POWER DISSIPATION:

ICC =4

µA (MAX.) at TA =25 oC

s

COMPATIBLE WITH TTL OUTPUTS:

VIH =2V (MIN), VIL = 0.8V (MAX)

s

POWER DOWN PROTECTION ON INPUTS &

OUTPUTS

s

SYMMETRICAL OUTPUT IMPEDANCE:

|IOH|=IOL = 8 mA (MIN)

s

BALANCED PROPAGATION DELAYS:

tPLH

≅ tPHL

s

OPERATING VOLTAGE RANGE:

VCC (OPR) = 4.5V to 5.5V

s

PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 240

s

IMPROVED LATCH-UP IMMUNITY

s

LOW NOISE: VOLP = 0.9V (Max.)

DESCRIPTION

The 74VHCT240A is an advanced high-speed

CMOS

OCTAL

BUS

BUFFER

(3-STATE)

fabricated with sub-micron silicon gate and

double-layer metal wiring C

2MOS technology.

G output enable governs four BUS BUFFERs.

This device is designed to be used with 3 state

memory address drivers, etc.

Power down protection is provided on all inputs

and outputs and 0 to 7V can be accepted on

inputs with no regard to the supply voltage. This

device can be used to interface 5V to 3V.

All inputs

and

outputs are

equipped with

protection circuits against static discharge, giving

them 2KV ESD immunity and transient excess

voltage.

PIN CONNECTION AND IEC LOGIC SYMBOLS

ORDER CODES :

74VHCT240AM

74VHCT240AT

M

(Micro Package)

T

(TSSOP Package)

®

1/8

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