74AC240B 查看數據表（PDF） - STMicroelectronics

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74AC240B

OCTAL BUS BUFFER WITH 3 STATE OUTPUTS (INVERTED)

STMicroelectronics 

74AC240

OCTAL BUS BUFFER

WITH 3 STATE OUTPUTS (INVERTED)

s HIGH SPEED: tPD = 4.2ns (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 50Ω 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 240

s IMPROVED LATCH-UP IMMUNITY

DESCRIPTION

The 74AC240 is an advanced high-speed CMOS

OCTAL BUS BUFFER (3-STATE) fabricated with

sub-micron silicon gate and double-layer metal

wiring C2MOS tecnology.

G control input governs four BUS BUFFERs.

DIP

SOP

TSSOP

ORDER CODES

PACKAGE

DIP

SOP

TSSOP

TUBE

74AC240B

74AC240M

T&R

74AC240MTR

74AC240TTR

This device is designed to be used with 3 state

memory address drivers, etc.

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

April 2001

1/9

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