CD54AC280/3A
CD54ACT280/3A
S E M I C O N D U C T O R
COMPLETE DATA SHEET
COMING SOON!
9-Bit Odd/Even Parity Generator/Checker
June 1997
Description
Functional Diagram
8
The CD54AC280/3A and CD54ACT280/3A are 9-bit odd/
even parity generator/checkers that utilize the Harris
Advanced CMOS Logic technology. Both even and odd par-
ity outputs are available for checking or generating parity
words up to nine bits long. Even parity is indicated (∑E out-
put is HIGH) when an even number of data inputs is HIGH.
Odd parity is indicated (∑O output is HIGH) when an odd
number of data inputs is HIGH. Parity checking for words
larger than nine bits can be accomplished by tying the ∑E
output to any output of an additional AC/ACT280 parity
checker.
I0
9
I1
10
I2
I3
5
6
∑ EVEN
∑ ODD
11
12
13
1
I4
I5
I6
The CD54AC280/3A and CD54ACT280/3A are supplied in
14 lead dual-in-line ceramic packages (F suffix).
2
4
I7
I8
GND = 7
CC = 14
NC = 3
V
ACT INPUT LOAD TABLE
INPUT
UNIT LOAD (NOTE 1)
All
1.43
NOTE:
1. Unit load is ∆I limit specified in DC Electrical Specifications
CC
o
Table, e.g., 2.4mA Max at +25 C.
Absolute Maximum Ratings
DC Supply Voltage, V . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6V
Power Dissipation Per Package, P
D
CC
o
o
DC Input Diode Current, I
T = -55 C to +100 C (Package F) . . . . . . . . . . . . . . . . . . 500mW
IK
A
o
o
For V < -0.5V or V > V + 0.5V . . . . . . . . . . . . . . . . . . . . . .±20mA
T = +100 C to +125 C (Package F) . . . . . . . . Derate Linearly at
I
I
CC
A
o
DC Output Diode Current, I
8mW/ C to 300mW
OK
For V < -0.5V or V > V + 0.5V. . . . . . . . . . . . . . . . . . . . .±50mA Operating Temperature Range, T
O
O
CC
A
o
o
DC Output Source or Sink Current, Per Output Pin, I
Package Type F. . . . . . . . . . . . . . . . . . . . . . . . . .-55 C to +125 C
O
o
o
For V > -0.5V or V < V + 0.5V. . . . . . . . . . . . . . . . . . . . .±50mA
Storage Temperature, T
. . . . . . . . . . . . . . . . . .-65 C to +150 C
O
O
CC
STG
DC V or GND Current, I or I
Lead Temperature (During Soldering)
CC
CC
GND
For Up to 4 Outputs Per Device, Add ±25mA For Each
Additional Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±100mA
At Distance 1/16in. ± 1/32in. (1.59mm ± 0.79mm)
From Case For 10s Max . . . . . . . . . . . . . . . . . . . . . . . . . . +265 C
Unit Inserted Into a PC Board (Min Thickness 1/16in., 1.59mm)
o
o
With Solder Contacting Lead Tips Only. . . . . . . . . . . . . . . +300 C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Recommended Operating Conditions
o
o
Supply Voltage Range, V
Operating Temperature, T . . . . . . . . . . . . . . . . . . .-55 C to +125 C
CC
A
Unless Otherwise Specified, All Voltages Referenced to GND
Input Rise and Fall Slew Rate, dt/dv
T = Full Package Temperature Range
CD54AC Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5V to 5.5V
CD54ACT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V
at 1.5V to 3V (AC Types) . . . . . . . . . . . . . . . . . . . 0ns/V to 50ns/V
at 3.6V to 5.5V (AC Types) . . . . . . . . . . . . . . . . . 0ns/V to 20ns/V
at 4.5V to 5.5V (AC Types) . . . . . . . . . . . . . . . . . 0ns/V to 10ns/V
A
DC Input or Output Voltage, V , V . . . . . . . . . . . . . . . . . . 0V to V
CC
I
O
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper I.C. Handling Procedures.
File Number 3905
Copyright © Harris Corporation 1994
1
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