High-Speed CMOS Logic 4-Bit Binary Full Adder with Fast Carry

1 Features

Adds two binary numbers
Full internal lookahead
Fast ripple carry for economical expansion
Operates with both positive and negative logic
Fanout (over temperature range)
- Standard outputs 10 LSTTL loads
- Bus driver outputs 15 LSTTL loads
Wide operating temperature range: –55℃ to 125℃
Balanced propagation delay and transition times
Significant power reduction compared to LSTTL Logic ICs
HC types
- 2 V to 6 V operation
- High noise immunity: N_IL = 30%, N_IH = 30% of V_CC at V_CC = 5 V
HCT types
- 4.5 V to 5.5 V operation
- Direct LSTTL input logic compatibility,
  V_IL = 0.8 V (max), V_IH = 2 V (min)
- CMOS input compatibility, I_I ≤ 1 µA at V_OL, V_OH

2 Description

The CDx4HC283 and CDx4HCT283 contain 4-bit binary adders. The HCT device has TTL-voltage compatible inputs.

Device Information

PART NUMBER	PACKAGE^⁽¹⁾	BODY SIZE (NOM)
CD54HC283	J (CDIP, 16)	24.38 mm × 6.92 mm
CD74HC283CD74HC283	D (SOIC, 16)	9.90 mm × 3.90 mm
CD74HC283CD74HC283	N (PDIP, 16)	19.31 mm × 6.35 mm
CD74HCT283CD74HCT283	D (SOIC, 16)	9.90 mm × 3.90 mm
CD74HCT283CD74HCT283	N (PDIP, 16)	19.31 mm × 6.35 mm

(1) For all packages see the orderable addendum at the end of the datasheet.

Functional Diagram

3 Revision History

Changes from Revision D (October 2003) to Revision E (July 2022)

Updated the numbering, formatting, tables, figures, and cross-references throughout the document to reflect modern data sheet standardsGo

4 Pin Configuration and Functions

J, N, or D package
16-Pin CDIP, PDIP, or SOIC
Top View

5 Specifications

5.1 Absolute Maximum Ratings⁽¹⁾

			MIN	MAX	UNIT
V_CC	Supply voltage		– 0.5	7	V
I_IK	Input diode current	For V_I < –0.5 V or V_I > V_CC + 0.5 V		±20	mA
I_OK	Output diode current	For V_O < –0.5 V or V_O > V_CC + 0.5 V		±20	mA
I_O	Drain current, per output	For –0.5 V < V_O < V_CC + 0.5 V		±25	mA
I_O	Output source or sink current per output pin	For V_O > –0.5 V or V_O < V_CC + 0.5 V		±25	mA
	Continuous current through V_CC or GND			±50	mA
T_J	Junction temperature			150	°C
T_stg	Storage temperature range		– 65	150	°C
	Lead temperature (Soldering 10s)(SOIC - lead tips only)			300	°C

(1) 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.

5.2 Recommended Operating Conditions

			MIN	MAX	UNIT
V_CC	Supply voltage range	HC types	2	6	V
V_I, V_O	DC input or output voltage		0	V_CC	V
	Input rise and fall time	2 V		1000	ns
		4.5 V		500
		6 V		400
T_A	Temperature range		–55	125	V

5.3 Thermal Information

THERMAL METRIC		D (SOIC)	N (PDIP)	UNIT
THERMAL METRIC		16 PINS	16 PINS	UNIT
R_θJA	Junction-to-ambient thermal resistance^⁽¹⁾	73	67	°C/W

(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report.