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MC74HC393A Datasheet PDF : 11 Pages
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MC74HC393A
Dual 4−Stage Binary Ripple
Counter
High−Performance Silicon−Gate CMOS
The MC74HC393A is identical in pinout to the LS393. The device
inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LSTTL outputs.
This device consists of two independent 4−bit binary ripple counters
with parallel outputs from each counter stage. A ÷ 256 counter can be
obtained by cascading the two binary counters.
Internal flip−flops are triggered by high−to−low transitions of the
clock input. Reset for the counters is asynchronous and active−high.
State changes of the Q outputs do not occur simultaneously because of
internal ripple delays. Therefore, decoded output signals are subject to
decoding spikes and should not be used as clocks or as strobes except
when gated with the Clock of the HC393A.
Features
• Output Drive Capability: 10 LSTTL Loads
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1 mA
• High Noise Immunity Characteristic of CMOS Devices
• In Compliance with the JEDEC Standard No. 7A Requirements
• Chip Complexity: 236 FETs or 59 Equivalent Gates
• Pb−Free Packages are Available
14
1
http://onsemi.com
MARKING
DIAGRAMS
14
PDIP−14
N SUFFIX
CASE 646
1
MC74HC393AN
AWLYYWWG
14
1
14
SOIC−14
D SUFFIX
CASE 751A
1
HC393AG
AWLYWW
14
1
TSSOP−14
DT SUFFIX
CASE 948G
14
HC
393A
ALYWG
G
1
14
14
1
SOEIAJ−14
F SUFFIX
CASE 965
74HC393A
ALYWG
1
A
L, WL
Y, YY
W, WW
G or G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= 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 2 of this data sheet.
© Semiconductor Components Industries, LLC, 2006
1
October, 2006 − Rev. 4
Publication Order Number:
MC74HC393A/D
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