Octal Bus Buffer/Line Driver - ON Semiconductor
Description
MC74VHCT244A
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.
3 V to 5.
0 V, because it has full 5.
0 V CMOS level output swings.
The VHCT244A input and output (when disabled) structures provide protection when voltages between 0 V and 5.
5 V 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.
Features
• High Speed: tPD = 5.
6 ns (Typ) at VCC = 5.
0 V • Low Power Dissipation: ICC = 4.
0 mA (Max) at TA = 25°C • TTL−Compatible Inputs: VIL = 0.
8 V; VIH = 2.
0 V • Power Down Protection Provided on Inputs and Outputs • Balanced Propagation Delays • Designed for 4.
5 V to 5.
5 V Operating Range • Low Noise: VOLP = 1.
1 V (Max) • Pin and Function Compatible with Other Standard Logic Families • Latchup Performance Exceeds 300 mA • ESD Performance:
Human Body Model > 2000 V; Machine Model > 200 V
• Chip Complexity: 112 FETs or 28 Equivalent Gates • NLV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable
• These Devices are Pb−Free and are RoHS Compliant
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MARKING DIAGRAMS
20
VHCT244A
1 SOIC−20WB SUFFIX DW
AWLYYWWG
CASE 751D 1
20
1 TSSOP−20 SUFFIX DT CASE 948E 1
VHCT 244A ALYWG
G
A
= Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
G or G = Pb−Free Package
(Note: Microdot may be in either location)
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