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74F8961 Datasheet(PDF) 11 Page - NXP Semiconductors |
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74F8961 Datasheet(HTML) 11 Page - NXP Semiconductors |
11 / 11 page Philips Semiconductors FAST Products Product specification 74F8960/74F8961 Octal latched bidirectional Futurebus transceivers (3-State + open-collector) December 19, 1990 11 AC WAVEFORMS VM VM VM VM Waveform 1. Propagation delay for data to output Waveform 3. Data setup and hold times and LE pulse width Waveform 4. 3–state output enable time to high level and output disable time from high level Waveform 5. 3-state output enable time to low level and output disable time from low level LE VM VM VM VM VM VM ts(L) ts(H) th(L) th(H) VM VM VM tPHZ tPZH VOH -0.3V 0V VM VM VM tPLZ tPZL VOL +0.3V OEA An OEA An An An, Bn An, Bn, OEBn tPLH tPHL VM tw(L) VM VM VM VM Waveform 2. Propagation delay for data to output An, Bn An, Bn, OEBn tPHL tPLH NOTES: 1. For all waveforms, VM = 1.5V. 2. The shaded areas indicate when the input is permitted to change for predictable output performance. TEST CIRCUITS AND WAVEFORMS CD tw 90% VM 10% 90% VM 10% 90% VM 10% 90% VM 10% NEGATIVE PULSE POSITIVE PULSE tw AMP (V) Low V Low V tTHL (tf ) INPUT PULSE REQUIREMENTS rep. rate tw tTLH tTHL Input pulse definition VCC family 74F D.U.T. PULSE GENERATOR RL CL RT VIN VOUT Test circuit for 3–state outputs on A port DEFINITIONS: RL = Load resistor; see AC electrical characteristics for value. CL = Load capacitance includes jig and probe capacitance; see AC electrical characteristics for value. RU = Pull up resistor; see AC electrical characteristics for value. CD = 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 VM RL 7.0V VCC D.U.T. PULSE GENERATOR RT VIN VOUT Test circuit for outputs on B port RU 7.0V Low V SWITCH POSITION TEST SWITCH closed open All other tPLZ, tPZL A port 3.0V 0.0V 1.5V 1MHz 500ns 2.5ns 2.5ns B port 3.0V 1.0V 1.5V 1MHz 500ns 4.0ns 4.0ns |
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Descripción similar - 74F8961 |
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