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MC74VHCT573A Datasheet, PDF (1/7 Pages) ON Semiconductor – Octal D-Type Latch with 3-State Output | |||
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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Octal D-Type Latch
with 3-State Output
The MC74VHCT573A is an advanced high speed CMOS octal latch with
3âstate output fabricated with silicon gate CMOS technology. It achieves
high speed operation similar to equivalent Bipolar Schottky TTL while
maintaining CMOS low power dissipation.
This 8âbit Dâtype latch is controlled by a latch enable input and an output
enable input. When the output enable input is high, the eight outputs are in a
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.
The VHCT573A 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 â input/output voltage mismatch,
battery backup, hot insertion, etc.
⢠High Speed: tPD = 7.7ns (Typ) at VCC = 5V
⢠Low Power Dissipation: ICC = 4µA (Max) at TA = 25°C
⢠TTLâCompatible 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 = 1.6V (Max)
⢠Pin and Function Compatible with Other Standard Logic Families
⢠Latchup Performance Exceeds 300mA
⢠ESD Performance: HBM > 2000V; Machine Model > 200V
⢠Chip Complexity: 234 FETs or 58.5 Equivalent Gates
LOGIC DIAGRAM
DATA
INPUTS
D0 2
D1 3
D2 4
D3 5
D4 6
D5 7
D6 8
D7 9
LE 11
OE 1
19 Q0
18 Q1
17 Q2
16 Q3
15 Q4
14 Q5
13 Q6
12 Q7
NONINVERTING
OUTPUTS
MC74VHCT573A
DW SUFFIX
20âLEAD SOIC PACKAGE
CASE 751Dâ04
DT SUFFIX
20âLEAD TSSOP PACKAGE
CASE 948Eâ02
M SUFFIX
20âLEAD SOIC EIAJ PACKAGE
CASE 967â01
ORDERING INFORMATION
MC74VHCTXXXADW SOIC
MC74VHCTXXXADT TSSOP
MC74VHCTXXXAM SOIC EIAJ
PIN ASSIGNMENT
OE 1
D0 2
D1 3
D2 4
D3 5
D4 6
D5 7
D6 8
D7 9
GND 10
20 VCC
19 Q0
18 Q1
17 Q2
16 Q3
15 Q4
14 Q5
13 Q6
12 Q7
11 LE
FUNCTION TABLE
INPUTS
OE
LE
D
L
H
H
L
H
L
L
L
X
H
X
X
OUTPUT
Q
H
L
No Change
Z
6/97
© Motorola, Inc. 1997
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