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74ABT245D Datasheet(PDF) 4 Page - NXP Semiconductors |
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74ABT245D Datasheet(HTML) 4 Page - NXP Semiconductors |
4 / 6 page Philips Semiconductors Product data 74ABT245 Octal transceiver with direction pin (3-State) 5 AC CHARACTERISTICS GND = 0 V; tR = tF = 2.5 ns; CL = 50 pF, RL = 500 Ω LIMITS SYMBOL PARAMETER WAVEFORM Tamb = +25 °C VCC = +5.0 V Tamb = –40 °C to +85 °C VCC = +5.0 V ±0.5 V UNIT Min Typ Max Min Max tPLH tPHL Propagation delay An to Bn or Bn to An 1 1.0 1.0 2.2 2.9 4.1 4.2 1.0 1.0 4.6 4.6 ns tPZH tPZL Output enable time to HIGH and LOW level 2 1.3 2.3 3.0 4.0 4.8 5.8 1.3 2.3 5.3 6.3 ns tPHZ tPLZ Output disable time from HIGH and LOW Level 2 1.0 1.0 4.7 4.1 6.2 5.8 1.0 1.0 7.2 6.3 ns AC WAVEFORMS VM = 1.5V, VIN = GND to 3.0V An or Bn INPUT VM VM Bn or An OUTPUT VM VM tPLH tPHL SA00124 Waveform 1. Waveforms showing the input to output propagation delays nOE INPUT OUTPUT OUTPUT VM VM tPZH tPHZ VOH VM VM VOL tPZL tPLZ 3.5V 0V VOL + 0.3V VOH – 0.3V SA00024 Waveform 2. Waveforms showing the 3-State Output Enable and Disable times TEST CIRCUIT AND WAVEFORMS CL = 50 pF 500 Ω Load Circuit DEFINITIONS CL = Load capacitance includes jig and probe capacitance; see AC CHARACTERISTICS for value. TEST S1 tpd open tPLZ/tPZL 7 V tPHZ/tPZH open SA00012 500 Ω From Output Under Test S1 7 V Open GND |
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