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N74F148N Datasheet(PDF) 6 Page - NXP Semiconductors |
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N74F148N Datasheet(HTML) 6 Page - NXP Semiconductors |
6 / 10 page Philips Semiconductors Product specification 74F148 8-input priority encoder March 1, 1990 6 AC ELECTRICAL CHARACTERISTICS LIMITS SYMBOL PARAMETER TEST CONDITION VCC = +5.0V Tamb = +25°C CL = 50pF, RL = 500Ω VCC = +5.0V ± 10% Tamb = 0°C to +70°C CL = 50pF, RL = 500Ω UNIT MIN TYP MAX MIN MAX tPLH tPHL Propagation delay In to An Waveform 2 3.5 3.5 6.0 6.0 9.0 9.0 3.5 3.5 10.0 10.0 ns tPLH tPHL Propagation delay In to EO Waveform 1 1.5 1.5 3.0 2.5 6.5 6.5 1.5 1.5 7.5 7.5 ns tPLH tPHL Propagation delay In to GS Waveform 2 2.0 2.0 4.0 4.0 8.0 8.0 2.0 2.0 9.0 9.0 ns tPLH tPHL Propagation delay EI to An Waveform 2 3.5 3.0 6.0 5.5 8.5 8.0 3.5 3.0 9.5 9.0 ns tPLH tPHL Propagation delay EI to GS Waveform 2 2.5 3.0 4.5 5.5 7.0 7.5 2.5 3.0 8.0 8.5 ns tPLH tPHL Propagation delay EI to EO Waveform 2 3.0 3.5 5.0 5.0 7.0 7.5 3.0 3.5 8.0 9.0 ns AC WAVEFORMS For all waveforms, VM = 1.5V. VM VM VM VM An, EO, GS In, EI tPHL tPLH SF00186 Waveform 1. For Inverting Outputs VM VM VM VM An, EO, GS In, EI tPHL tPLH SF00187 Waveform 2. For Non-Inverting Outputs 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 Totem-Pole Outputs DEFINITIONS: RL = Load resistor; see AC ELECTRICAL CHARACTERISTICS for value. CL = Load capacitance includes jig and probe capacitance; see AC ELECTRICAL CHARACTERISTICS for value. RT = Termination resistance should be equal to ZOUT of pulse generators. tTHL (tf ) tTLH (tr ) tTLH (tr ) AMP (V) amplitude 3.0V 1.5V VM SF00006 |
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Similar Description - N74F148N |
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