CD4008BC

Features:

`Wide supply voltage range .................3.0V to 15V
`High noise immunity ...................0.45 V_CC (typ.)
` Low power TTL................. Fan out of 2 driving 74L
    compatibility ......................or 1 driving 74LS
`4 sum outputs plus parallel look-ahead carry-output
` Quiescent current specified to 15V
` Maximum input leakage of 1 A at 15V (full package temperature range)


Specifications

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications.

DC Supply Voltage (V_DD)........ -0.5 to +18 V_DC
Input Voltage (V_IN) ........-0.5 to V_DD + 0.5 V_DC
Storage Temperature Range (T_S) ....-65 to +150
Power Dissipation (P_D)
Dual-In-Line................... 700 mW
Small Outline................ .. 500 mW
Lead Temperature (T_L)
(Soldering, 10 seconds)............. . 260

Description

The CD4008B 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'' bit to permit high-speed operation in arithmetic sections using several CD4008B's. CD4008B 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. CD4008B outputs include the four sum bits, S1 and S4, in addition to the high-speed "parallel-carry-out" which may be utilized at a succeeding CD4008B section.

All inputs are protected from damage due to static discharge by diode clamps to V_DD and GND.