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PDF IN74HC393A Data sheet ( Hoja de datos )
| Número de pieza | IN74HC393A | |
| Descripción | Dual 4-Bit Binary Counter | |
| Fabricantes | IK Semiconductor | |
| Logotipo |  |
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TECHNICAL DATA
Dual 4-Stage Binary Ripple Counter
High-Performance Silicon-Gate CMOS
IN74HC393A
The IN74HC393A 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 IN74HC393A.
• 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
IN74HC393AN Plastic
IN74HC393AD SOIC
TA = -55° to 125° C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
PIN 14 =VCC
PIN 7 = GND
www.datasheet4u.com
FUNCTION TABLE
Inputs
Clock Reset
XH
HL
LL
L
L
X = don’t care
Outputs
L
No Change
No Change
No Change
Advance to
Next State
1
1 page  
IN74HC393A
Figure 1. Switching Waveform
Figure 2. Switching Waveform
Figure 4.Test Circuit
EXPANDED LOGIC DIAGRAM
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet IN74HC393A.PDF ] | |
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