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74F776 Datasheet(PDF) 8 Page - NXP Semiconductors |
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74F776 Datasheet(HTML) 8 Page - NXP Semiconductors |
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8 / 12 page  Philips Semiconductors Product specification 74F776 Pi–bus transceiver December 19, 1990 8 AC ELECTRICAL CHARACTERISTICS A PORT LIMITS Tamb = +25°C Tamb = 0°C to +70 °C Tamb = –40°C to +85°C SYMBOL PARAMETER TEST VCC = +5.0V VCC = +5.0V ± 10% VCC = +5.0V ± 10% UNIT CONDITION CL = 50pF, RL = 500Ω CL = 50pF, RL = 500Ω CL = 50pF, RL = 500Ω MIN TYP MAX MIN MAX MIN MAX tPLH tPHL Propagation delay Bn to An Waveform 1 5.5 4.5 8.0 6.0 12.0 9.0 5.5 4.5 12.0 9.0 5.5 4.5 12.0 9.0 ns tPZH tPZL Output enable time to high or low, OEA to An Waveform 3, 4 8.0 8.5 10.5 11.0 13.5 13.5 7.5 8.0 15.0 15.5 7.5 8.0 15.5 15.5 ns tPHZ tPLZ Output disable time from high or low, OEA to An Waveform 3, 4 2.0 2.0 3.5 4.5 6.0 7.0 1.5 2.0 6.5 7.5 1.5 2.0 6.5 7.5 ns B PORT LIMITS TEST Tamb = +25°C Tamb = 0°C to +70 °C Tamb = –40°C to +85°C SYMBOL PARAMETER CONDITION VCC = +5.0V VCC = +5.0V ± 10% VCC = +5.0V ± 10% UNIT CD = 30pF, RU = 9Ω CD = 30pF, RU = 9Ω CD = 30pF, RU = 9Ω MIN TYP MAX MIN MAX MIN MAX tPLH tPHL Propagation delay An to Bn Waveform 1 3.0 3.0 5.0 4.5 7.0 7.5 2.5 2.5 8.0 8.5 2.0 2.5 9.0 8.5 ns tPLH tPHL Propagation delay LE to Bn Waveform 1 3.5 3.5 5.0 5.0 8.0 8.0 3.0 2.5 9.0 9.0 2.5 2.5 9.5 9.5 ns tPLH tPHL Enable/disable time OEBn to An Waveform 1 3.0 3.5 4.5 5.5 7.0 9.0 2.5 3.5 8.0 10.0 2.5 3.5 8.5 10.5 ns tTLH tTHL Transition time, B port 1.3V to 1.7V, 1.7V to 1.3V Test Circuit and Waveforms 0.5 0.5 2.0 2.0 4.5 4.5 0.5 0.5 5.0 4.5 0.5 0.5 5.0 4.5 ns AC SETUP REQUIREMENTS LIMITS TEST Tamb = +25°C Tamb = 0°C to +70°C Tamb = –40°C to +85°C SYMBOL PARAMETER CONDITION VCC = +5.0V VCC = +5.0V ± 10% VCC = +5.0V ± 10% UNIT CL = 50pF, RL = 500Ω CL = 50pF, RL = 500Ω CL = 50pF, RL = 500Ω MIN TYP MAX MIN MAX MIN MAX tsu (H) tsu (L) Setup time, high or low An to LE Waveform 2 3.5 4.5 4.5 5.0 4.5 5.0 ns th(H) th (L) Hold time, high or low An to LE Waveform 2 0.0 0.0 0.0 0.0 0.0 0.0 ns tw (L) LE pulse width, low Waveform 2 4.0 5.0 5.0 ns AC WAVEFORMS VM VM VM VM An, Bn An, Bn, OEBn tPLH tPHL SF00427 Waveform 1. Propagation delay for data to output LE VM VM VM VM VM VM tsu(L) th(L) th(H) An VM tw(L) ts(H) SF00428 Waveform 2. Data setup and hold times and LE pulse width |
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