MC74VHCT240AM ,Octal Bus Buffer/Line DriverMAXIMUM RATINGS*Symbol Parameter Value UnitThis device contains protectionÎÎÎcircuitry to guard aga ..
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MC74VHCT240AM
Octal Bus Buffer/Line Driver
SEMICONDUCTOR TECHNICAL DATA#! # $
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The MC74VHCT240A is an advanced high speed CMOS octal bus buffer
fabricated with silicon gate CMOS technology. It achieves high speed
operation similar to equivalent Bipolar Schottky TTL while maintaining
CMOS low power dissipation.
The MC74VHCT240A is an inverting 3–state buffer, and has two
active–low output enables. This device is designed to be used with 3–state
memory address drivers, etc.
The VHCT inputs are compatible with TTL levels. This device can be used
as a level converter for interfacing 3.3V to 5.0V, because it has full 5V CMOS
level output swings.
The VHCT240A input and output (when disabled) structures provide
protection when voltages between 0V and 5.5V are applied, regardless of
the supply voltage. These input and output structures help prevent device
destruction caused by supply voltage – input/output voltage mismatch,
battery backup, hot insertion, etc. High Speed: tPD = 5.6ns (Typ) at VCC = 5V Low Power Dissipation: ICC = 4μA (Max) at TA = 25°C TTL–Compatible Inputs: VIL = 0.8V; VIH = 2.0V Power Down Protection Provided on Inputs and Outputs Balanced Propagation Delays Designed for 4.5V to 5.5V Operating Range Low Noise: VOLP = 1.1V (Max) Pin and Function Compatible with Other Standard Logic Families Latchup Performance Exceeds 300mA ESD Performance: HBM > 2000V; Machine Model > 200V Chip Complexity: 110 FETs or 27.5 Equivalent Gates
LOGIC DIAGRAMDATA
INPUTS YB4
YB3
YB2
YB1
YA4
YA3
YA2
YA1
INVERTING
OUTPUTS
OUTPUT
ENABLES
OEA
OEB
FUNCTION TABLE
