Philips 74F257A User Manual Download

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Philips Semiconductors

74F257A
Quad 2-line to 1-line selector/multiplexer,
non-inverting (3-State)

Product specification

1995 Mar 31

INTEGRATED CIRCUITS

IC15 Data Handbook

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Summary of Contents for 74F257A

Page 1: ...Philips Semiconductors 74F257A Quad 2 line to 1 line selector multiplexer non inverting 3 State Product specification 1995 Mar 31 INTEGRATED CIRCUITS IC15 Data Handbook ...

Page 2: ...at would exceed the maximum rating if the outputs were tied together Design of the Output Enable signals must ensure that there is no overlap when outputs of 3 state devices were tied together PIN CONFIGURATION 16 15 14 13 12 11 10 7 6 5 4 3 2 1 Yb VCC Yd I0c I1c I1d OE I0d S I0a I1b I1a Ya I0b 9 8 GND Yc SF00673 TYPE TYPICAL PROPAGATION DELAY TYPICAL SUPPLY CURRENT TOTAL 74F257A 4 3ns 12mA ORDERI...

Page 3: ... I1 Y H X X X Z L H X L L L H X H H L L L X L L L H X H H High voltage level L Low voltage level X Don t care Z High impedance off state APPLICATION SF00677 I0a I1a I0b I1b I0c I1c I0d I1d Ya Yb Yc Yd I0a I1a I0b I1b I0c I1c I0d I1d Ya Yb Yc Yd I0a I1a I0b I1b I0c I1c I0d I1d Ya Yb Yc Yd I0a I1a I0b I1b I0c I1c I0d I1d Ya Yb Yc Yd 74F257A 74F257A 74F257A 74F257A 4 BIT DATA BUS OE S OE S OE S OE S ...

Page 4: ...igh output state 0 5 to VCC V IOUT Current applied to output in Low output state 48 mA T Operating free air temperature range Commercial range 0 to 70 C Tamb Operating free air temperature range Industrial range 40 to 85 C Tstg Storage temperature range 65 to 150 C RECOMMENDED OPERATING CONDITIONS SYMBOL PARAMETER LIMITS UNIT SYMBOL PARAMETER MIN NOM MAX UNIT VCC Supply voltage 4 5 5 0 5 5 V VIH H...

Page 5: ...propriate value specified under recommended operating conditions for the applicable type 2 All typical values are at VCC 5V Tamb 25 C 3 Not more than one output should be shorted at a time For testing IOS the use of high speed test apparatus and or sample and hold techniques are preferable in order to minimize internal heating and more accurately reflect operational values Otherwise prolonged shor...

Page 6: ...t Disable Time from Low Level TEST CIRCUIT AND WAVEFORMS tw 90 VM 10 90 VM 10 90 VM 10 90 VM 10 NEGATIVE PULSE POSITIVE PULSE tw AMP V 0V 0V tTHL tf INPUT PULSE REQUIREMENTS rep rate tw tTLH tTHL 1MHz 500ns 2 5ns 2 5ns Input Pulse Definition VCC family 74F D U T PULSE GENERATOR RL CL RT VIN VOUT Test Circuit for 3 State Outputs DEFINITIONS RL Load resistor see AC electrical characteristics for val...

Page 7: ...Philips Semiconductors Product specification 74F257A Quad 2 line 1 line selector multiplexer non inverting 3 State 1995 Mar 31 7 DIP16 plastic dual in line package 16 leads 300 mil SOT38 4 ...

Page 8: ...Philips Semiconductors Product specification 74F257A Quad 2 line 1 line selector multiplexer non inverting 3 State 1995 Mar 31 8 SO16 plastic small outline package 16 leads body width 3 9 mm SOT109 1 ...

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