MC74VHCT244A Motorola, MC74VHCT244A Datasheet

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MC74VHCT244A

Manufacturer Part Number
MC74VHCT244A
Description
Octal Bus Buffer/Line Driver with 3-State Outputs
Manufacturer
Motorola
Datasheet

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Octal Bus Buffer/Line Driver
with 3-State Outputs
fabricated with silicon gate CMOS technology. It achieves high speed
operation similar to equivalent Bipolar Schottky TTL while maintaining
CMOS low power dissipation.
active–low output enables. This device is designed to be used with 3–state
memory address drivers, etc.
as a level converter for interfacing 3.3V to 5.0V, because it has full 5V CMOS
level output swings.
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.
6/97
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Motorola, Inc. 1997
The MC74VHCT244A is an advanced high speed CMOS octal bus buffer
The MC74VHCT244A is a noninverting 3–state buffer, and has two
The VHCT inputs are compatible with TTL levels. This device can be used
The VHCT244A input and output (when disabled) structures provide
High Speed: t PD = 5.6ns (Typ) at V CC = 5V
Low Power Dissipation: I CC = 4 A (Max) at T A = 25 C
TTL–Compatible Inputs: V IL = 0.8V; V IH = 2.0V
Power Down Protection Provided on Inputs and Outputs
Balanced Propagation Delays
Designed for 4.5V to 5.5V Operating Range
Low Noise: V OLP = 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
ENABLES
OUTPUT
INPUTS
DATA
A1
A2
A3
A4
B1
B2
B3
B4
OEA
OEB
2
4
6
8
11
13
15
17
1
19
LOGIC DIAGRAM
1
18
16
14
12
9
7
5
3
YA1
YA2
YA3
YA4
YB1
YB2
YB3
YB4
NONINVERTING
OUTPUTS
REV 0
FUNCTION TABLE
OEA, OEB
MC74VHCT244A
MC74VHCTXXXADW
MC74VHCTXXXADT
MC74VHCTXXXAM
H
L
L
20–LEAD SOIC EIAJ PACKAGE
20–LEAD TSSOP PACKAGE
INPUTS
ORDERING INFORMATION
20–LEAD SOIC PACKAGE
OEA
GND
YB3
YB4
YB2
YB1
A1
A2
A3
A4
PIN ASSIGNMENT
CASE 751D–04
CASE 948E–02
CASE 967–01
DW SUFFIX
1
2
3
4
5
6
7
8
9
10
DT SUFFIX
M SUFFIX
A, B
H
X
L
20
19
18
17
16
15
14
13
12
11
SOIC
TSSOP
SOIC EIAJ
V CC
OEB
YA1
B4
YA2
B3
YA3
B2
YA4
B1
OUTPUTS
YA, YB
H
L
Z

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MC74VHCT244A Summary of contents

Page 1

... SEMICONDUCTOR TECHNICAL DATA 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. ...

Page 2

... MC74VHCT244A Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î MAXIMUM RATINGS* Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î ...

Page 3

... Parameter 3 MC74VHCT244A Î Î Î Î Î Î Î Î Î Î Î – Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î ...

Page 4

... MC74VHCT244A 1.5V t PLH 1.5V Figure 1. TEST POINT OUTPUT DEVICE UNDER TEST * Includes all probe and jig capacitance Figure 3. Test Circuit MOTOROLA SWITCHING WAVEFORMS 3V OEA or OEB 1.5V GND t PHL 1. 1.5V TEST CIRCUITS OUTPUT DEVICE UNDER TEST * Includes all probe and jig capacitance ...

Page 5

... DETAIL DETAIL E 5 MC74VHCT244A NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.150 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.13 (0 ...

Page 6

... BSC 0.050 BSC H E 7.40 8.20 0.291 0.323 L 0.50 0.85 0.020 0.033 L E 1.10 1.50 0.043 0.059 0.70 0.90 0.028 0.035 Z ––– 0.81 ––– 0.032 Mfax is a trademark of Motorola, Inc. MC74VHCT244A/D VHC Data – Advanced CMOS Logic DL203 — Rev 1 ...

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