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IN74HC393 Datasheet(PDF) 1 Page - Integral Corp.

Part No. IN74HC393
Description  DUAL 4-STAGE BINARY RIPPLE COUNTER High-Performance Silicon-Gate CMOS
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Maker  INTEGRAL [Integral Corp.]
Homepage  http://www.iksemi.com/
Logo INTEGRAL - Integral Corp.

IN74HC393 Datasheet(HTML) 1 Page - Integral Corp.

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IN74HC393
1
DUAL 4-STAGE BINARY RIPPLE COUNTER
High-Performance Silicon-Gate CMOS
The IN74HC393 is identical in pinout to the LS/ALS393. The
device inputs are compatible with standard CMOS outputs; with
pullup resistors, they are compatible with LS/ALSTTL 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 becaue 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 IN74HC393.
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 µA
• High Noise Immunity Characteristic of CMOS Devices
ORDERING INFORMATION
IN74HC393N Plastic
IN74HC393D SOIC
TA = -55° to 125° C for all
packages
LOGIC DIAGRAM
PIN 14 =VCC
PIN 7 = GND
PIN ASSIGNMENT
FUNCTION TABLE
Inputs
Outputs
Clock
Reset
X
H
L
H
L
No Change
L
L
No Change
L
No Change
L
Advance to
Next State
X = don’t care


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