HEF4539B
DESCRIPTION
The HEF4539B is a dual 4-input multiplexer with mon select logic. Each multiplexer has four multiplexer inputs (I0 and I3), an active LOW enable input (E) and a multiplexer output (O). When HIGH, E forces O of the respective multiplexer LOW, independent of the select inputs (S0 to S1) and I0 to I3. When E is LOW, S0 and S1 determine which multiplexer input (I0 to I3) on each of the multiplexers is routed to the respective multiplexer output (O).
HEF4539B MSI
Fig.1 Functional diagram.
PINNING I0A, I1A, I2A, I3A I0B, I1B, I2B, I3B S0, S1 EA, EB OA, OB Fig.2 Pinning diagram. multiplexer inputs multiplexer inputs select inputs enable inputs (active LOW) multiplexer outputs
FAMILY DATA, IDD LIMITS category MSI See Family Specifications
HEF4539BP(N): HEF4539BD(F): HEF4539BT(D):
16-lead DIL; plastic (SOT38-1) 16-lead DIL; ceramic (cerdip) (SOT74) 16-lead SO; plastic (SOT109-1)
( ): Package Designator North America
January 1995
Philips Semiconductors
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