Datasheet

1
Data sheet acquired from Harris Semiconductor
SCHS251D
Features
• Buffered Inputs
• Exceeds 2kV ESD Protection MIL-STD-883, Method
3015
• SCR-Latchup-Resistant CMOS Process and Circuit
Design
• Speed of Bipolar FAST™/AS/S with Significantly
Reduced Power Consumption
• Balanced Propagation Delays
• AC Types Feature 1.5V to 5.5V Operation and
Balanced Noise Immunity at 30% of the Supply
• ±24mA Output Drive Current
- Fanout to 15 FAST™ ICs
- Drives 50Ω Transmission Lines
Description
The ’AC283 and ’ACT283 4-bit binary adders with fast carry
that utilize Advanced CMOS Logic technology. These
devices add two 4-bit binary numbers and generate a carry-
out bit if the sum exceeds 15.
Because of the symmetry of the add function, this device
can be used with either all active-HIGH operands (positive
logic) or with all active-LOW operands (negative logic).
When using positive logic, the carry-in input must be tied
LOW if there is no carry-in.
Pinout
CD54AC283, CD54ACT283
(CERDIP)
CD74AC283, CD74ACT283
(PDIP, SOIC)
TOP VIEW
Functional Diagram
Ordering Information
PART
NUMBER
TEMP.
RANGE (
o
C) PACKAGE
CD54AC283F3A -55 to 125 16 Ld CERDIP
CD74AC283E 0 to 70
o
C, -40 to 85,
-55 to 125
16 Ld PDIP
CD74AC283M 0 to 70
o
C, -40 to 85,
-55 to 125
16 Ld SOIC
CD54ACT283F3A -55 to 125 16 Ld CERDIP
CD74ACT283E 0 to 70
o
C, -40 to 85,
-55 to 125
16 Ld PDIP
CD74ACT283M 0 to 70
o
C, -40 to 85,
-55 to 125
16 Ld SOIC
NOTES:
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
electrical specifications. Please contact your local TI sales office or
customer service for ordering information.
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
S1
B1
A1
S0
A0
B0
GND
C
IN
V
CC
A2
S2
A3
B3
S3
C
OUT
B2
5
6
3
2
15
11
12
14
4
9
S2
S1
A0
B0
A1
B1
B2
A3
B3
A2
7
C
IN
GND = 8
V
CC
= 16
10
13
1
S0
S3
C
OUT
August 1998 - Revised May 2000
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
FAST™ is a Trademark of Fairchild Semiconductor.
Copyright
© 2000, Texas Instruments Incorporated
CD54/74AC283,
CD54/74ACT283
4-Bit Binary Fill Adder With Fast Carry