M74HC193 STMICROELECTRONICS [STMicroelectronics], M74HC193 Datasheet - Page 2

• Manufacturer Part Number: M74HC193
• Description: SYNCHRONOUS UP/DOWN DECADE(,BINARY) COUNTER
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M54/M74HC192/193
INPUT AND OUTPUT EQUIVALENT CIRCUIT
IEC LOGIC SYMBOL (HC191)
TRUTH TABLE
X: Don’t Care
2/15
COUNT UP
H
H
X
X
COUNT DOWN
H
H
X
X
LOAD
H
H
H
H
X
L
PIN DESCRIPTION
IEC LOGIC SYMBOL (HC193)
15, 1, 10, 9
CLEAR
3, 2, 6, 7
PIN No
H
L
L
L
L
L
11
12
13
14
16
4
5
8
BORROW
QA to QD
DA to DD
SYMBOL
CARRY
CLEAR
LOAD
GND
CP
CP
V
CC
D
U
COUNT DOWN
NAME AND FUNCTION
Flip-Flop Outputs
Count Down Clock Input
Count Up Clock Input
Asynchronous Parallel
Load Input (Active LOW)
Count Up (Carry)
Output (Active LOW)
Count Down (Borrow)
Output (Active LOW)
Asynchronous Reset
Input (Active HIGH)
Data Inputs
Ground (0V)
Positive Supply Voltage
NO COUNT
NO COUNT
FUNCTION
COUNT UP
PRESET
RESET