S E M I C O N D U C T O R
CD54AC139/3A
CD54ACT139/3A
Dual 2-to-4-Line Decoder/Demultiplexer
Functional Diagram
2
1A0
5
DECODER
1
3
1A1
1
1E
14
2A0
11
DECODER
2
13
2A1
15
2E
GND = 8
V
CC
= 16
2Y1
10
2Y2
9
2Y3
12
2Y0
1Y1
6
1Y2
7
1Y3
4
1Y0
June 1997
COMPLETE DATA SHEET
COMING SOON!
Description
The CD54AC139/3A and CD54ACT139/3A are dual 2-to-4-
line decoders/demultiplexers that utilize the Harris Advanced
CMOS Logic technology. These devices contain two inde-
pendent binary to 1-of-4 decoders. each with a single active-
LOW enable input (1E or 2E). Data on the select inputs (1A0
and 1A1 or 2A0 and 2A1) cause one of the four normally
HIGH outputs to go LOW.
If the enable input is HIGH, all four outputs remain HIGH. For
demultiplexer operation, the enable input is the data input.
The enable input also functions as a chip select when these
devices are cascaded.
The CD54AC139/3A and CD54ACT139/3A are supplied in
16 lead dual-in-line ceramic packages (F suffix).
ACT INPUT LOAD TABLE
INPUT
A0, A1
E
NOTE:
1. Unit load is
∆I
CC
limit specified in DC Electrical Specifications
Table, e.g., 2.4mA Max at +25
o
C.
UNIT LOAD
(NOTE 1)
1
0.67
Absolute Maximum Ratings
DC Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6V
DC Input Diode Current, I
IK
For V
I
< -0.5V or V
I
> V
CC
+ 0.5V
. . . . . . . . . . . . . . . . . . . . . .±20mA
DC Output Diode Current, I
OK
For V
O
< -0.5V or V
O
> V
CC
+ 0.5V
. . . . . . . . . . . . . . . . . . . . .±50mA
DC Output Source or Sink Current, Per Output Pin, I
O
For V
O
> -0.5V or V
O
< V
CC
+ 0.5V
. . . . . . . . . . . . . . . . . . . . .±50mA
DC V
CC
or GND Current, I
CC
or I
GND
For Up to 4 Outputs Per Device, Add
±25mA
For Each
Additional Output
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±100mA
Power Dissipation Per Package, P
D
T
A
= -55
o
C to +100
o
C (Package F) . . . . . . . . . . . . . . . . . . 500mW
T
A
= +100
o
C to +125
o
C (Package F) . . . . . . . . Derate Linearly at
8mW/
o
C to 300mW
Operating Temperature Range, T
A
Package Type F . . . . . . . . . . . . . . . . . . . . . . . . . . -55
o
C to +125
o
C
Storage Temperature, T
STG
. . . . . . . . . . . . . . . . . . -65
o
C to +150
o
C
Lead Temperature (During Soldering)
At Distance 1/16in.
±
1/32in. (1.59mm
±
0.79mm)
From Case For 10s Max . . . . . . . . . . . . . . . . . . . . . . . . . . +265
o
C
Unit Inserted Into a PC Board (Min Thickness 1/16in., 1.59mm)
With Solder Contacting Lead Tips Only. . . . . . . . . . . . . . . +300
o
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
Supply Voltage Range, V
CC
Unless Otherwise Specified, All Voltages Referenced to GND
T
A
= Full Package Temperature Range
CD54AC Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5V to 5.5V
CD54ACT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V
DC Input or Output Voltage, V
I
, V
O
. . . . . . . . . . . . . . . . . . 0V to V
CC
Operating Temperature, T
A
. . . . . . . . . . . . . . . . . . . -55
o
C to +125
o
C
Input Rise and Fall Slew Rate, dt/dv
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
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper I.C. Handling Procedures.
Copyright
©
Harris Corporation 1994
File Number
3888
1
Test/Measurement
京公网安备 11010802033920号
EEWORLD
