MM74HC161N Fairchild Semiconductor, MM74HC161N Datasheet - Page 2

• Manufacturer Part Number: MM74HC161N
• Description: IC COUNTER BINARY PRESET 16-DIP
• Manufacturer: Fairchild Semiconductor
• Series: 74HCr

Specifications of MM74HC161N

• Logic Type: Binary Counter
• Direction: Up
• Number Of Elements: 1
• Number Of Bits Per Element: 4
• Reset: Asynchronous
• Timing: Synchronous
• Count Rate: 40MHz
• Trigger Type: Positive Edge
• Voltage - Supply: 2 V ~ 6 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: 16-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 74HC161

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Connection Diagram
Logic Diagram
2
Truth Tables
H
L
X
CLK CLR ENP ENT
CLK CLR ENP ENT
X
X
X
X
X
X
X
LOW Level
LOW-to-HIGH Transition
HIGH Level
Don’t Care
H
H
H
H
H
H
H
H
H
H
L
L
X
H
X
H
X
H
X
H
L
L
L
L
MM74HC161
MM74HC163
X
H
X
H
X
H
X
H
L
L
L
L
Load
Load
H
H
H
H
H
H
H
H
X
X
L
L
Count & RC disabled
Count & RC disabled
Count & RC disabled
Count & RC disabled
Increment Counter
Increment Counter
Count disabled
Count disabled
Function
Function
Clear
Clear
Load
Load