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74LVT244B 数据表(PDF) 6 Page - NXP Semiconductors |
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74LVT244B 数据表(HTML) 6 Page - NXP Semiconductors |
6 / 10 page Philips Semiconductors Product specification 74LVT244B 3.3V Octal buffer/line driver (3-State) 1998 Nov 12 6 NOTE: 1. All typical values are at VCC = 3.3V and Tamb = 25°C. AC WAVEFORMS VM = 1.5V, VIN = GND to 2.7V nAx INPUT VM VM nYx OUTPUT VM VM tPLH tPHL SA00016 3.0V or VCC whichever is less 0V VOH VOL Waveform 1. Input (nAx) to Output (nYx) Propagation Delays OE INPUT tPZH tPHZ Yn OUTPUT VOH Yn OUTPUT VOL tPZL tPLZ 3.0V 0V VOL + 0.3V VOH – 0.3V 2.7V 1.5V 1.5V 1.5V 1.5V 0V SV00103 Waveform 2. 3-State Output Enable and Disable Times TEST CIRCUIT AND WAVEFORMS VM VM tW AMP (V) NEGATIVE PULSE 10% 10% 90% 90% 0V VM VM tW AMP (V) POSITIVE PULSE 90% 90% 10% 10% 0V tTHL (tF) tTLH (tR)tTHL (tF) tTLH (tR) VM = 1.5V Input Pulse Definition DEFINITIONS RL = Load resistor; see AC CHARACTERISTICS for value. CL = Load capacitance includes jig and probe capacitance; see AC CHARACTERISTICS for value. RT = Termination resistance should be equal to ZOUT of pulse generators. INPUT PULSE REQUIREMENTS FAMILY 74LVT PULSE GENERATOR VIN D.U.T. VOUT CL VCC RL Test Circuit for 3-State Outputs 6.0V RT RL SV00092 Open GND SWITCH POSITION TEST SWITCH tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open 6V GND Amplitude Rep. Rate tW tR tF 2.7V v10MHz 500ns v2.5ns v2.5ns |
类似零件编号 - 74LVT244B |
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类似说明 - 74LVT244B |
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