The 74F537 is one-of-ten decoder/demultiplexer with four active HIGH BCD inputs and ten mutually exclusive outputs. A polarity control input determines whether the outputs are active LOW or active HIGH. The 74F537 has 3STATE outputs, and a HIGH signal on the Output Enable (OE) input forces all outputs to the high impedance state. Two input enables, active HIGH E2 and active LOW E1, 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 go to the inactive state (i.e., same polarity as the P input).
Order Number 74F537SC 74F537PC Package Number M20B N20A Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter "X" to the ordering code.
U.L. Pin Names P O0O9 Description HIGH/LOW Address Inputs Enable Input (Active LOW) Enable Input (Active HIGH) Output Enable Input (Active LOW) Polarity Control Input 3-STATE Outputs Input IIH/IIL Output IOH/IOL mA (20 mA)
Inputs Function High Impedance Disable Active HIGH Output OE E1 Active LOW Output = H)
H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
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