
MC74VHC573
Octal D-Type Latch with
3-State Output
The MC74VHC573 is an advanced high speed CMOS octal latch
with 3state 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 8bit Dtype 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 internal circuit is composed of three stages, including a buffer
output which provides high noise immunity and stable output. The
inputs tolerate voltages up to 7 V, allowing the interface of 5 V systems
to 3 V systems.
High Speed: tPD = 4.5 ns (Typ) at VCC = 5 V
Low Power Dissipation: ICC = 4 μA (Max) at TA = 25°C
High Noise Immunity: VNIH = VNIL = 28% VCC
Power Down Protection Provided on Inputs
Balanced Propagation Delays
Designed for 2 V to 5.5 V Operating Range
Low Noise: VOLP = 1.2 V (Max)
Pin and Function Compatible with Other Standard Logic Families
Latchup Performance Exceeds 300 mA
ESD Performance: HBM > 2000 V; Machine Model > 200 V
Chip Complexity: 218 FETs or 54.5 Equivalent Gates
These Devices are PbFree and are RoHS Compliant
PIN ASSIGNMENT
D4
D2
D1
D0
OE
GND
D7
D6
D5
D3
5
4
3
2
1
10
9
8
7
6
14
15
16
17
18
19
20
11
12
13
Q3
Q2
Q1
Q0
VCC
LE
Q7
Q6
Q5
Q4
Semiconductor Components Industries, LLC, 2011
May, 2011 Rev. 6
1
Publication Order Number:
MC74VHC573/D
http://onsemi.com
Device
Package
Shipping
ORDERING INFORMATION
MC74VHC573DWR2G
SOIC20
1000 / Reel
MC74VHC573DTR2G
TSSOP20
2500 / Reel
MC74VHC573MELG
SOEIAJ20
2000 / Reel
20
1
20
MARKING DIAGRAMS
SOIC20
DW SUFFIX
CASE 751D
VHC573
AWLYYWWG
TSSOP20
DT SUFFIX
CASE 948E
SOEIAJ20
M SUFFIX
CASE 967
VHC573
AWLYWWG
1
20
1
20
VHC573
= Specific Device Code
A
= Assembly Location
WL, L
= Wafer Lot
Y
= Year
WW, W
= Work Week
G or G
= PbFree Package
(Note: Microdot may be in either location)
VHC
573
ALYWG
G