SEMICONDUCTOR
CD54AC245/3A
CD54ACT245/3A
COMPLETE DATA SHEET
June 1997
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 (
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 ∆ICC limit specified in DC Electrical Specifications
Table, e.g., 2.4mA Max at +25oC.
COMING SOON!
OE) is HIGH, the
Octal-Bus Transceiver
Three-State, Non-Inverting
Functional Diagram
A0
A1
A2
A3
A4
A5
A6
A7
DIR
OE
2
3
4
5
6
7
8
9
1
18
B0
17
B1
16
B2
15
B3
14
B4
13
B5
12
B6
11
B7
19
Absolute Maximum Ratings
DC Supply Voltage, VCC. . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +6V
DC Input Diode Current, I
For VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . . . . . . . . . . . .±20mA
DC Output Diode Current, I
For VO < -0.5V or VO > VCC + 0.5V. . . . . . . . . . . . . . . . . . . . .±50mA
DC Output Source or Sink Current, Per Output Pin, I
For VO > -0.5V or VO < VCC + 0.5V. . . . . . . . . . . . . . . . . . . . .±50mA
DC VCC or GND Current, ICC or I
For Up to 4 Outputs Per Device, Add ±25mA For Each
Additional Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±100mA
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.
IK
OK
O
GND
Power Dissipation Per Package, P
TA = -55oC to +100oC (Package F) . . . . . . . . . . . . . . . . . . 500mW
TA = +100oC to +125oC (Package F) . . . . . . . . Derate Linearly at
Operating Temperature Range, T
Package Type F. . . . . . . . . . . . . . . . . . . . . . . . . . -55oC to +125oC
Storage Temperature, T
Lead Temperature (During Soldering)
At Distance 1/16in. ± 1/32in. (1.59mm ± 0.79mm)
From Case For 10s Max . . . . . . . . . . . . . . . . . . . . . . . . . . +265oC
Unit Inserted Into a PC Board (Min Thickness 1/16in., 1.59mm)
With Solder Contacting Lead Tips Only. . . . . . . . . . . . . . . +300oC
STG
D
8mW/oC to 300mW
A
. . . . . . . . . . . . . . . . . .-65oC to +150oC
Recommended Operating Conditions
Supply Voltage Range, V
Unless Otherwise Specified, All Voltages Referenced to GND
TA = Full Package Temperature Range
CD54AC Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5V to 5.5V
CD54ACT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V
DC Input or Output Voltage, VI, VO. . . . . . . . . . . . . . . . . . 0V to V
CC
Operating Temperature, TA . . . . . . . . . . . . . . . . . . .-55oC to +125oC
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
CC
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper I.C. Handling Procedures.
Copyright
© Harris Corporation 1994
1
File Number
3901