CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper I.C. Handling Procedures.
Copyright
Harris Corporation 1994
1
S E M I C O N D U C T O R
CD54AC245/3A
CD54ACT245/3A
Octal-Bus Transceiver
Three-State, Non-Inverting
Functional Diagram
18
17
16
15
13
11
12
14
2
B0
B1
B2
B3
B4
B5
B6
B7
OE
DIR
1
19
4
9
3
5
6
7
8
A0
A1
A2
A3
A4
A5
A6
A7
Description
The CD54AC245/3A and CD54ACT245/3A are octal-bus
transceivers that utilize the Harris Advanced CMOS Logic
technology. They are non-inverting three-state bidirectional
tranceiver-buffers intended for two-way transmission from
"A" bus to "B" bus or "B" bus to "A" bus. The logic level
present on the direction input (DIR) determines the data
direction. When the output enable input (OE) is HIGH, the
outputs are in the high-impedance state.)
The CD54AC245/3A and CD54ACT245/3A are supplied in
20 lead dual-in-line ceramic packages (F suffix).
ACT INPUT LOAD TABLE
INPUT
UNIT LOAD (NOTE 1)
An, Bn
0.83
OE
0.64
DIR
0.15
NOTE:
1. Unit load is
I
CC
limit specified in DC Electrical Specifications
Table, e.g., 2.4mA Max at +25
o
C.
June 1997
File Number
3901
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
COMING SOON!
COMPLETE DATA SHEET
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