MC74HC393A_14 Datasheet, PDF (1/8 Pages) ON Semiconductor – Dual 4-Stage Binary Ripple Counter

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. 7 A Requirements
• Chip Complexity: 236 FETs or 59 Equivalent Gates
• NLV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
• These Devices are Pb−Free, Halogen Free and are RoHS Compliant
LOGIC DIAGRAM
CLOCK ^{1, 13}
BINARY
COUNTER
3, 11 _Q1
4, 10 _Q2
5, 9 _Q3
6, 8 _Q4
RESET ^{2, 12}
PIN 14 = V_CC
PIN 7 = GND
http://onsemi.com
SOIC−14 NB
D SUFFIX
CASE 751A
TSSOP−14
DT SUFFIX
CASE 948G
PIN ASSIGNMENT
CLOCK a 1
RESET a 2
Q1_a 3
Q2_a 4
Q3_{a 5}
Q4_a 6
GND 7
14 V_CC
13 CLOCK b
12 RESET b
11 Q1_b
10 Q2_b
9 Q3_b
8 Q4_b
MARKING DIAGRAMS
14
HC393AG
AWLYWW
1
SOIC−14 NB
14
HC
393A
ALYWG
G
1
TSSOP−14
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)
FUNCTION TABLE
Inputs
Clock Reset
X
H
H
L
L
L
L
L
Outputs
L
No Change
No Change
No Change
Advance to
Next State
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
© Semiconductor Components Industries, LLC, 2014
1
August, 2014 − Rev. 7
Publication Order Number:
MC74HC393A/D