74ACT161MTR STMicroelectronics, 74ACT161MTR Datasheet - Page 2

• Manufacturer Part Number: 74ACT161MTR
• Description: IC COUNTER 4-BIT SYNC 16-SOIC
• Manufacturer: STMicroelectronics
• Series: 74ACTr

Specifications of 74ACT161MTR

• Logic Type: Binary Counter
• Direction: Up
• Number Of Elements: 1
• Number Of Bits Per Element: 4
• Reset: Asynchronous
• Timing: Synchronous
• Count Rate: 290MHz
• Trigger Type: Positive Edge
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

74ACT161
INPUT AND OUTPUT EQUIVALENT CIRCUIT
TRUTH TABLE
X : Don’t Care; A, B, C, D; Logic level of data input; CARRY OUT : TE x QA x QB x QC x QD
LOGIC DIAGRAM
2/13
CLEAR
H
H
H
H
H
L
LOAD
H
H
H
X
X
L
INPUTS
PE
X
X
X
L
H
X
TE
X
X
X
H
X
L
CLOCK
X
A
L
PIN DESCRIPTION
14, 13, 12,
3, 4, 5, 6
PIN No
10
15
16
11
1
2
7
9
8
NO CHANGE
NO CHANGE
NO CHANGE
L
B
COUNT UP
OUTPUTS
CARRY OUT Terminal Count Output
A, B, C, D
SYMBOL
QA toQD
CLOCK
CLEAR
LOAD
C
GND
L
V
PE
TE
CC
Clock Input (LOW to
Flip-Flop Outputs
Master Reset
HIGH Edge Trigger)
Data Inputs
Count Enable Input
Count Enable Carry Input
Parallel Enable Input
Ground (0V)
Positive Supply Voltage
D
L
NAME QND FUNCTION
PRESET DATA
RESET TO "0"
NO COUNT
NO COUNT
NO COUNT
FUNCTION
COUNT