IN74ACT161
P
RESETTABLE
C
OUNTER
High-Speed Silicon-Gate CMOS
The IN74ACT161 is identical in pinout to the LS/ALS161,
HC/HCT161. The IN74ACT161 may be used as a level converter
for interfacing TTL or NMOS outputs to High Speed CMOS Inputs.
The IN74ACT161 is programmable 4-bit synchronous modulo-
16 counter that feature parallel Load, asynchronous Reset, a
Carry Output for cascading and count-enable controls.
The IN74ACT161 is binary counter with asynchronous Reset.
TTL/NMOS Compatible Input Levels
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 4.5 to 5.5 V
Low Input Current: 1.0
碌A(chǔ);
0.1
碌A(chǔ)
@ 25擄 C
Outputs Source/Sink 24 mA
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ORDERING INFORMATION
IN74ACT161N Plastic
IN74ACT161D SOIC
T
A
= -40擄 to 85擄 C for all
packages
LOGIC DIAGRAM
PIN ASSIGNMENT
PIN 16 =V
CC
PIN 8 = GND
Inputs
Rese
t
L
H
H
H
H
H
Load
X
L
H
H
H
X
Enable
P
X
X
X
L
H
X
FUNCTION TABLE
Outputs
Enable
T
X
X
L
X
H
X
Clock
X
Q0
L
P0
Q1
Q2
Q3
L
P3
Function
Reset to 鈥?鈥?/div>
Preset Data
No count
No count
Count
No count
L
L
P1
P2
No change
No change
Count up
No change
X=don鈥檛 care
P0,P1,P2,P3 = logic level of Data inputs
Ripple Carry Out = Enable T
IN74ACT161D相關(guān)型號PDF文件下載
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