© 1999 Fairchild Semiconductor Corporation DS009550 www.fairchildsemi.com
April 1988
Revised August 1999
7
4F537 1-of
-10 Decoder

wit
h
3-ST
A
T
E
Out
puts
74F537
1-of-10 Decoder with 3-STATE Outputs
General Description
The 74F537 is one-of-ten decoder/demultiplexer with four
active HIGH BCD inputs and ten mutually exclusive out-
puts. A polarity control input determines whether the out-
puts are active LOW or active HIGH. The 74F537 has 3-
STATE outputs, and a HIGH signal on the Output Enable
(OE) input forces all outputs to the high impedance state.
Two input enables, active HIGH E
2
and active LOW E
1
, are
available for demultiplexing data to the selected output in
either non-inverted or inverted form. Input codes greater
than BCD nine cause all outputs to go to the inactive state
(i.e., same polarity as the P input).

Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
IEEE/IEC
Connection Diagram
Order Number Package Number Package Description
74F537SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74F537PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide