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MC74HC393A Datasheet(PDF) 1 Page - ON Semiconductor

Part No. MC74HC393A
Description  Dual 4-Stage Binary Ripple Counter
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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MC74HC393A Datasheet(HTML) 1 Page - ON Semiconductor

   
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© Semiconductor Components Industries, LLC, 2000
March, 2000 – Rev. 2
1
Publication Order Number:
MC74HC393A/D
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.
Output Drive Capability: 10 LSTTL Loads
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2 to 6 V
Low Input Current: 1 µA
High Noise Immunity Characteristic of CMOS Devices
In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
Chip Complexity: 236 FETs or 59 Equivalent Gates
LOGIC DIAGRAM
Q1
Q2
Q3
Q4
CLOCK
RESET
1, 13
2, 12
3, 11
4, 10
5, 9
6, 8
PIN 14 = VCC
PIN 7 = GND
BINARY
COUNTER
FUNCTION TABLE
Inputs
Clock
Reset
Outputs
XH
L
H
L
No Change
L
L
No Change
L
No Change
L
Advance to
Next State
Device
Package
Shipping
ORDERING INFORMATION
MC74HC393AN
PDIP–14
2000 / Box
MC74HC393AD
SOIC–14
http://onsemi.com
55 / Rail
MC74HC393ADR2
SOIC–14
2500 / Reel
MARKING
DIAGRAMS
A
= Assembly Location
WL or L
= Wafer Lot
YY or Y
= Year
WW or W = Work Week
MC74HC393ADT
TSSOP–14
96 / Rail
MC74HC393ADTR2
TSSOP–14
2500 / Reel
TSSOP–14
DT SUFFIX
CASE 948G
HC
393A
ALYW
1
14
1
14
PDIP–14
N SUFFIX
CASE 646
MC74HC393AN
AWLYYWW
SOIC–14
D SUFFIX
CASE 751A
1
14
HC393A
AWLYWW
PIN ASSIGNMENT
11
12
13
14
8
9
10
5
4
3
2
1
7
6
Q2b
Q1b
RESET b
CLOCK b
VCC
Q4b
Q3b
Q2a
Q1a
RESET a
CLOCK a
GND
Q3a
Q4a


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