SEMICONDUCTOR TECHNICAL DATA
The MC74VHCT541A 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 MC74VHCT541A is a noninverting, 3–state, buffer/line driver/line
receiver. When either OE1 or OE2 is high, the terminal outputs are in the
high impedance state.
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.
DW SUFFIX
20–LEAD SOIC PACKAGE
CASE 751D–04
The VHCT541A 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.
DT SUFFIX
20–LEAD TSSOP PACKAGE
CASE 948E–02
•
•
•
•
•
•
•
•
•
•
•
High Speed: t
= 5.4ns (Typ) at V
= 5V
PD
Low Power Dissipation: I
CC
= 4µA (Max) at T = 25°C
CC
A
TTL–Compatible Inputs: V = 0.8V; V = 2.0V
Power Down Protection Provided on Inputs and Outputs
Balanced Propagation Delays
IL IH
M SUFFIX
20–LEAD SOIC EIAJ PACKAGE
CASE 967–01
Designed for 4.5V to 5.5V Operating Range
Low Noise: V
= 1.6V (Max)
OLP
ORDERING INFORMATION
Pin and Function Compatible with Other Standard Logic Families
Latchup Performance Exceeds 300mA
ESD Performance: HBM > 2000V; Machine Model > 200V
Chip Complexity: 134 FETs or 33.5 Equivalent Gates
MC74VHCTXXXADW
MC74VHCTXXXADT
MC74VHCTXXXAM
SOIC
TSSOP
SOIC EIAJ
PIN ASSIGNMENT
LOGIC DIAGRAM
OE1
1
20
V
CC
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
A1
A2
A3
A4
A5
A6
A7
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
A1
A2
A3
2
3
4
19
18
17
OE2
Y1
Y2
A4
A5
5
16
15
14
13
12
11
Y3
Y4
Y5
Y6
Y7
Y8
6
DATA
INPUTS
NONINVERTING
OUTPUTS
A6
7
A7
8
A8
9
GND
10
A8
FUNCTION TABLE
Inputs
1
OE1
Output Y
OUTPUT
ENABLES
OE1 OE2
A
19
OE2
L
L
L
L
L
H
X
X
L
H
Z
Z
H
X
X
H
6/97
REV 0
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Motorola, Inc. 1997