KK74HC393A Datasheet, PDF (1/7 Pages) KODENSHI KOREA CORP. – Dual 4-Stage Binary Ripple Counter High-Performance Silicon-Gate CMOS

TECHNICAL DATA
Dual 4-Stage Binary Ripple Counter
High-Performance Silicon-Gate CMOS
KK74HC393A
The KK74HC393A 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 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 KK74HC393A.
• 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
KK74HC393AN Plastic
KK74HC393AD SOIC
T_A = -55° to 125° C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
PIN 14 =V_CC
PIN 7 = GND
FUNCTION TABLE
Inputs
Clock Reset
X
H
H
L
L
L
L
L
X = don’t care
Outputs
L
No Change
No Change
No Change
Advance to
Next State
1