CD54AC245/3A
CD54ACT245/3A
S E M I C O N D U C T O R
COMPLETE DATA SHEET
COMING SOON!
Octal-Bus Transceiver
Three-State, Non-Inverting
June 1997
Description
Functional Diagram
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
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.)
A0
A1
A2
A3
A4
A5
A6
A7
B0
B1
B2
B3
B4
B5
B6
B7
The CD54AC245/3A and CD54ACT245/3A are supplied in
20 lead dual-in-line ceramic packages (F suffix).
ACT INPUT LOAD TABLE
INPUT
An, Bn
OE
UNIT LOAD (NOTE 1)
1
DIR
OE
0.83
0.64
0.15
19
DIR
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 3901
Copyright © Harris Corporation 1994
1
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