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PDF HD74ACT161 Data sheet ( Hoja de datos )
| Número de pieza | HD74ACT161 | |
| Descripción | Synchronous Presettable Binary Counter | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HD74ACT161/HD74ACT163
Synchronous Presettable Binary Counter
Description
The HD74ACT161 and HD74ACT163 are high-speed synchronous modulo-16 binary counters. They are
synchronously presettable for application in programmable dividers and have two types of Count Enable
inputs plus a Terminal Count output for versatility in forming synchronous multistage counters. The
HD74ACT161 have an asynchronous Master Reset input that overrides all other inputs and forces the
outputs Low. The HD74ACT163 has a Synchronous Reset input that overrides counting and parallel
loading and allows the outputs to be simultaneously reset on the rising edge of the clock.
Features
• Synchronous Counting and Loading
• High-Speed Synchronous Expansion
• Typical Count Rate of 125 MHz
• Outputs Source/Sink 24 mA
• HD74ACT161 and HD74ACT163 have TTL-Compatible Inputs
1 page  
Block Diagram
HD74ACT161/HD74ACT163
PE
CEP
CET
’161 ’163
’163
ONRY
P0 P1 P2
P3
TC
CP
CP ’161 CP
ONRY
D CP D
CD O O
Q0 Q0
DETAIL A
DETAIL A
DETAIL A
DETAIL A
MR ’161
SR ’163
Q0
Q1 Q2
Q3
Please note that this diagram is provided only for the understanding of logic operations and should not be
used to estimate propagation delays.
DC Characteristics (unless otherwise specified)
Item
Maximum quiescent supply current
Symbol Max
ICC 80
Unit
µA
Maximum quiescent supply current ICC 8.0 µA
Maximum additional ICC/input
(HD74ACT161/HD74ACT163)
ICCT 1.5
mA
Condition
VIN = VCC or ground, VCC = 5.5 V,
Ta = Worst case
VIN = VCC or ground, VCC = 5.5 V,
Ta = 25°C
VIN = VCC – 2.1 V, VCC = 5.5 V,
Ta = Worst case
5
5 Page 
10.06
10.5 Max
16
9
18
0.80 Max
1.27
*0.42 ± 0.08
0.40 ± 0.06
0.15
0.12 M
*Dimension including the plating thickness
Base material dimension
Unit: mm
7.80
+
–
0.20
0.30
1.15
0.70 ± 0.20
0° – 8°
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
FP-16DA
—
Conforms
0.24 g
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet HD74ACT161.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| HD74ACT161 | Synchronous Presettable Binary Counter | Hitachi Semiconductor |
| HD74ACT163 | Synchronous Presettable Binary Counter | Hitachi Semiconductor |
| HD74ACT164 | Serial-In/ Parallel-Out Shift Register | Hitachi Semiconductor |
| HD74ACT164 | Shift Register |  Renesas |
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