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MC74VHCT244AONN/a20avaiOctal Bus Buffer/Line Driver
MC74VHCT244AMOTN/a2323avaiOctal Bus Buffer/Line Driver
MC74VHCT244ADTR2ONN/a29avaiOctal Bus Buffer/Line Driver


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MC74VHCT244A-MC74VHCT244ADTR2
Octal Bus Buffer/Line Driver
Octal Bus Buffer/Line Driver
with 3-State Outputs
The MC74VHCT244A 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 MC74VHCT244A is a noninverting 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 VHCT244A 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: 112 FETs or 28 Equivalent Gates
DATA
INPUTS YB4
YB3
YB2
YB1
YA4
YA3
YA2
YA1
NONINVERTING
OUTPUTS
OUTPUT
ENABLES
OEA
YB4
OEA
GND
YB1
YB2
YB3
YA2
YA1
OEB
VCC
YA4
YA3
FUNCTION TABLE
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