CD74AC245,
CD74ACT245
Data sheet acquired from Harris Semiconductor
SCHS245
Octal-Bus Transceiver,
September 1998
Three-State, Non-Inverting
Features
Description
• Buffered Inputs
The CD74AC245 and CD74ACT245 are octal-bus transceiv-
ers that utilize the Harris Advanced CMOS Logic technology.
They are non-inverting three-state bidirectional transceiver-
buffers intended for two-way transmission from “A” bus to “B”
bus or “B” bus to “A”. 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.
• Typical Propagation Delay
o
- 4ns at V
= 5V, T = 25 C, C = 50pF
A L
CC
• Exceeds 2kV ESD Protection MIL-STD-883, Method
3015
• SCR-Latchup-Resistant CMOS Process and Circuit
Design
[ /Title
(CD74
AC245
,
CD74
ACT24
5)
/Sub-
ject
(Octal-
Bus
Trans-
ceiver,
Three-
State,
Non-
Invert-
ing)
Ordering Information
• Speed of Bipolar FAST™/AS/S with Significantly
Reduced Power Consumption
PART
TEMP.
PKG.
NO.
o
NUMBER
RANGE ( C)
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
PACKAGE
20 Ld PDIP
20 Ld PDIP
20 Ld SOIC
20 Ld SOIC
• Balanced Propagation Delays
CD74AC245E
CD74ACT245E
CD74AC245M
CD74ACT245M
CD74AC245SM
CD74ACT245SM
NOTES:
E20.3
• AC Types Feature 1.5V to 5.5V Operation and
Balanced Noise Immunity at 30% of the Supply
E20.3
M20.3
M20.3
• ±24mA Output Drive Current
- Fanout to 15 FAST™ ICs
20 Ld SSOP M20.15
20 Ld SSOP M20.15
- Drives 50Ω Transmission Lines
1. When ordering, use the entire part number. Add the suffix 96 to
obtain the variant in the tape and reel.
2. Wafer and die for this part number is available which meets all elec-
trical specifications. Please contact your local sales office or Harris
customer service for ordering information.
Pinout
CD74AC245, CD74ACT245
/Autho
r ()
(PDIP, SSOP, SOIC)
TOP VIEW
/Key-
words
(Har-
ris
Semi-
con-
ductor,
Advan
ced
1
2
3
4
5
6
7
8
9
V
DIR
A0
A1
A2
A3
A4
A5
A6
A7
20
19
CC
OE
18 B0
17 B1
16 B2
15 B3
14 B4
13 B5
12
B6
CMOS
,Harris
Semi-
con-
GND 10
11 B7
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
FAST™ is a Trademark of Fairchild Semiconductor.
Copyright © Harris Corporation 1998
File Number 1907.1
1