m54hc590 STMicroelectronics, m54hc590 Datasheet - Page 2

• Manufacturer Part Number: m54hc590
• Description: Rad-hard 8 Binary Counter Register With 3 State Output
• Manufacturer: STMicroelectronics

M54HC590
Figure 1: IEC Logic Symbols
Figure 2: Input And Output Equivalent Circuit
Table 2: Truth Table
X: Don’t Care
RCO = QA’·QB’·QC’·QD’·QE’·QF’·QG’·QH’ (QA’ to QH’: INTERNAL OUTPUTS OF THE COUNTER)
2/16
G
H
X
X
X
X
X
X
L
RCK
X
X
X
X
X
X
INPUTS
CCLR
H
H
H
X
X
X
X
L
CCKEN
H
X
X
X
X
X
L
L
CCK
X
X
X
X
X
X
Table 1: Pin Description
1, 2, 3, 4, 5,
6, 7, 15
PIN N°
COUNTER DATA IS STORED INTO REGISTER
12
13
14
10
16
11
9
8
REGISTER STAGE IS NOT CHANGED
ADVANCE ONE COUNT
SYMBOL
QA to QH
Q OUTPUTS DISABLE
CCKEN
Q OUTPUTS ENABLE
CCLR
RCO
GND
CCK
RCK
COUNTER CLEAR
V
G
CC
NO COUNT
NO COUNT
OUTPUT
Outputs
Counter Clock Input
Counter Clock Enable
Input
Register Clock Input
Ripple Carry Output
Output Enable Input
Counter Clear Input
Ground (0V)
Positive Supply Voltage
NAME AND FUNCTION