HCF4008B

Features:

`4 SUM OUTPUTS PLUS PARALLEL LOOKAHERD CARRY-OUTPUT
`HIGH-SPEED OPERATION-SUM IN-TO-SUM OUT 160ns (typ.) : CARRY IN-TO-CARRYOUT 50ns (typ.) AT VDD = 10V, CL = 50pF
`QUIESCENT CURRENT SPECIFIED TO 20V FOR HCC DEVICE
`INPUT CURRENTOF 100nA AT 18V AND 25 FOR HCC DEVICE
`100% TESTEDFOR QUIESCENT CURRENT
`5V, 10V, AND 15V PARAMETRIC RATING
`MEETSALLREQUIREMENTSOFJEDECTENTATIVESTANDARDN°13A, "STANDARD SPECIFICATIONS FOR DESCRIPTION OF "B" SERIESCMOS DEVICES"


Pinout




Specifications

Symbol	Parameter	Value	Unit
VDD*	Supply Voltage :HCC Types HCF Types	0.5 to + 20 0.5 to + 18	V V
Vi	Input Voltage	0.5 to VDD + 0.5	V
II	DC Input Current (any one input)	± 10	mA
Ptot	Total Power Dissipation (per package) Dissipation per Output Transistor for Top = Full Package-temperature Range	200 100	mW mW
Top	Operating Temperature : HCC Types HCF Types	55 to + 125 40 to + 85
Tstg	Storage Temperature	65 to + 150

Description

TheHCC4008B (extended temperature range) and HCF4008B (intermediate temperature range) are monolithic integrated circuits, available in 16-lead dual in-line plastic or ceramic package and plastic micropackage.

TheHCC/HCF4008B 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" to permit high-speed operation in arithmetic sections using several HCC/HCF 4008B's.

HCC/HCF4008B 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.

HCC/HCF4008B outputs include the four sum bits, S1 toS4. Inaddition to the high speed "parallel-carryout" which may be utilized at a succeeding HCC/HCF4008B section.