SEMICONDUCTOR TECHNICAL DATA
J SUFFIX
CERAMIC PACKAGE
CASE 620–10
High–Performance Silicon–Gate CMOS
16
16
The MC54/74HC259A is identical in pinout to the LS259. The device
inputs are compatible with standard CMOS outputs; with pullup resistors,
they are compatible with LSTTL outputs.
1
N SUFFIX
PLASTIC PACKAGE
CASE 648–08
The HC259A has four modes of operation as shown in the mode selection
table. In the addressable latch mode, the data on Data In is written into the
addressed latch. The addressed latch follows the data input with all
non–addressed latches remaining in their previous states. In the memory
mode, all latches remain in their previous state and are unaffected by the
Data or Address inputs. In the one–of–eight decoding or demultiplexing
mode, the addressed output follows the state of Data In with all other outputs
in the LOW state. In the Reset mode all outputs are LOW and unaffected by
the address and data inputs. When operating the HC259A as an
addressable latch, changing more than one bit of the address could impose
a transient wrong address. Therefore, this should only be done while in the
memory mode.
1
D SUFFIX
SOIC PACKAGE
CASE 751B–05
16
1
DT SUFFIX
TSSOP PACKAGE
CASE 948F–01
16
1
ORDERING INFORMATION
•
•
•
•
•
•
Output Drive Capability: 10 LSTTL Loads
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2 to 6 V
MC54HCXXXAJ
Ceramic
Plastic
SOIC
MC74HCXXXAN
MC74HCXXXAD
MC74HCXXXADT
TSSOP
Low Input Current: 1 µA
High Noise Immunity Characteristic of CMOS Devices
In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
PIN ASSIGNMENT
•
Chip Complexity: 202 FETs or 50.5 Equivalent Gates
A0
A1
1
2
16
15
V
CC
LOGIC DIAGRAM
RESET
A2
Q0
Q1
Q2
3
4
5
6
7
8
14
13
12
11
10
9
ENABLE
DATA IN
Q7
1
2
3
4
5
6
7
9
A0
A1
A2
Q0
Q1
Q2
Q3
Q4
ADDRESS
INPUTS
NONINVERTING
OUTPUTS
Q6
Q5
13
10
11
Q3
DATA IN
Q5
Q6
GND
Q4
12
Q7
15
14
RESET
PIN 16 = V
CC
PIN 8 = GND
ENABLE
MODE SELECTION TABLE
LATCH SELECTION TABLE
Address Inputs
Enable Reset
Mode
Latch
C
B
A
Addressed
L
H
L
H
H
L
Addressable Latch
Memory
8–Line Demultiplexer
Reset
L
L
L
L
L
H
H
L
L
H
H
L
H
L
H
L
H
L
H
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
H
L
L
H
H
H
H
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice.
10/95
REV 0
1
Motorola, Inc. 1995