CDx4AC283, CDx4ACT283 4-Bit Binary Fill Adder with Fast Carry
1 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
2 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 carryout 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.
Device Information
| PART NUMBER | PACKAGE(1) | PACKAGE SIZE(2) | BODY SIZE(3) |
|---|---|---|---|
| CDx4AC283/ CDx4ACT283 | D (SOIC,16) | 9.9mm x 6mm | 9.9mm x 3.90mm |
| N (PDIP,16) | 19.3mm x 9.4mm | 19.3mm x 6.35mm |
(1) For more information, see Mechanical, Packaging, and Orderable
Information.
(2) The package size (length × width) is a nominal value and
includes pins, where applicable.
(3) The body size (length × width) is a nominal value and does not include
pins.
Functional Block Diagram3 Pin Configuration and Functions
Figure 3-1 CD54AC283, CD54ACT283 J
Package; CD74AC283, CD74ACT283 D or N Package; 16-Pin CDIP, PDIP, or SOIC (Top
View)Table 3-1 Pin Functions
| PIN | TYPE(1) | DESCRIPTION | |
|---|---|---|---|
| NAME | NO. | ||
| S1 | 1 | O | Sum output 1 |
| B1 | 2 | I | 1 bit input for binary number B |
| A1 | 3 | I | 1 bit input for binary number A |
| S0 | 4 | O | Sum output 0 |
| A0 | 5 | I | 0 bit input for binary number A |
| B0 | 6 | I | 0 bit input for binary number B |
| CIN | 7 | I | Carry input |
| GND | 8 | G | Ground |
| COUT | 9 | O | Carry output |
| S3 | 10 | O | Sum output 3 |
| B3 | 11 | I | 3 bit input for binary number B |
| A3 | 12 | I | 3 bit input for binary number A |
| S2 | 13 | O | Sum output 2 |
| A2 | 14 | I | 2 bit input for binary number A |
| B2 | 15 | I | 2 bit input for binary number B |
| VCC | 14 | P | VCC |
(1) I = Input, O = Output, I/O =
Input or Output, G = Ground, P = Power.
