CD4008BMS Datasheet, PDF (1/8 Pages) Intersil Corporation – CMOS 4-Bit Full Adder With Parallel Carry Out

CD4008BMS
November 1994
CMOS 4-Bit Full Adder With
Parallel Carry Out
Features
Pinout
• High-Voltage Type (20V Rating)
• 4 Sum Outputs Plus Parallel Look-ahead Carry-Output
CD4008BMS
TOP VIEW
• High-Speed Operation - Sum In-To-Sum Out, 160ns
Typ; Carry In-To-Carry Out, 5ns Typ. At VDD = 10V,
CL=50pF
• Standardized Symmetrical Output Characteristics
• 100% Tested For Quiescent Current At 20V
• Maximum Input Current of 1µa at 18V Over Full Pack-
age-Temperature Range;
- 100nA at 18V and 25^oC
• Noise Margin (Over Full Package Temperature Range):
- 1V at VDD = 5V
- 2V at VDD = 10V
- 2.5V at VDD = 15V
• 5V, 10V and 15V Parametric Ratings
• Meets All Requirements of JEDEC Tentative Standard
No. 13B, “Standard Specifications for Description of
‘B’ Series CMOS Devices”
Applications
• Binary Addition/Arithmetic Units
A4 1
B3 2
A3 3
B2 4
A2 5
B1 6
A1 7
VSS 8
16 VDD
15 B4
14 CO
13 S4
12 S3
11 S2
10 S1
9 C1
Logic Diagram
HIGH SPEED
PAR CARRY
* ¹⁵
B4
A4 ^{* 1}
B3 ^{* 2}
A3 * ³
14
CO
(CARRY-OUT)
SUM
C4
SUM
13
S4
12 _S3
Description
CD4008BMS types consist of four full adder stages with fast
look ahead carry provision from stage to stage. Circuitry is
included to provide a fast “parallel-carry-out” but to permit
high-speed operation in arithmetic sections using several
CD4008BMS’s.
CD4008BMS inputs include the four sets of bits to be added,
A1 to A4 and B1 to B4, in addition to the “Carry In” bit from a
previous section. CD4008BMS outputs include the four sum
bits, S1 to S4. In addition to the high speed “parallel-carry-
out” which may be utilized at a succeeding CD4008BMS
section.
The CD4008BMS is supplied in these 16-lead outline pack-
ages:
B2 * ⁴
A2 * ⁵
B1 ^{* 6}
A1 * ⁷
C1 ^{* 9}
(CARRY-IN)
VDD = 16
VSS = 8
C3
SUM
11
S2
C2
SUM
10
S1
VDD
*ALL INPUTS ARE PROTECTED
BY CMOS PROTECTION
NETWORK
VSS
TRUTH TABLE
A_i
B_i
C_i
C_O
SUM
Braze Seal DIP H4T
Frit Seal DIP
H1F
Ceramic Flatpack H6W
0
0
0
0
0
1
0
0
0
1
0
1
0
0
1
1
1
0
1
0
0
0
1
0
1
1
0
1
1
0
0
1
1
1
0
1
1
1
1
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999
7-675
File Number 3292