MC74VHCT244A_11 Datasheet, PDF (1/8 Pages) ON Semiconductor – Octal Bus Buffer/Line Driver with 3-State Outputs

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: t_PD = 5.6 ns (Typ) at V_CC = 5.0 V
• Low Power Dissipation: I_CC = 4.0 mA (Max) at T_A = 25°C
• TTL−Compatible Inputs: V_IL = 0.8 V; V_IH = 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: V_OLP = 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
• These Devices are Pb−Free and are RoHS Compliant
http://onsemi.com
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
20
74VHCT244
SOEIAJ−20
AWLYWWG
1
SUFFIX M
CASE 967 ¹
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)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 4 of this data sheet.
© Semiconductor Components Industries, LLC, 2011
1
May, 2011 − Rev. 7
Publication Order Number:
MC74VHCT244A/D