m54hc193 STMicroelectronics, m54hc193 Datasheet - Page 2

• Manufacturer Part Number: m54hc193
• Description: Rad-hard Synchronous Up/down Binary Counter
• Manufacturer: STMicroelectronics

M54HC193
IEC LOGIC SYMBOLS
INPUT AND OUTPUT EQUIVALENT CIRCUIT
TRUTH TABLE
X : Don’t Care
2/13
COUNT UP
H
H
X
X
COUNT DOWN
H
H
X
X
LOAD
H
H
H
H
X
L
PIN DESCRIPTION
15, 1, 10, 9
3, 2, 6, 7
CLEAR
PIN N°
12
13
14
16
11
H
L
L
L
L
L
4
5
8
BORROW
SYMBOL
QA to QD
CARRY
A to D
LOAD
CCD
CCU
GND
CLR
V
CC
COUNT DOWN
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
NAME AND FUNCTION
NO COUNT
NO COUNT
COUNT UP
FUNCTION
PRESET
RESET