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74ALS251 数据表(PDF) 4 Page - NXP Semiconductors |
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74ALS251 数据表(HTML) 4 Page - NXP Semiconductors |
4 / 8 page Philips Semiconductors Product specification 74ALS251 8-input multiplexer (3-State) 1991 Feb 08 4 DC ELECTRICAL CHARACTERISTICS (Over recommended operating free-air temperature range unless otherwise noted.) SYMBOL PARAMETER TEST CONDITIONS1 LIMITS UNIT SYMBOL PARAMETER TEST CONDITIONS1 MIN TYP2 MAX UNIT VO High level output voltage VCC±10%, VIL = MAX, IOH = –0.4mA VCC – 2 V VOH High-level output voltage CC , IL , VIH = MIN IOH = –2.6mA 2.4 3.2 V VO Low level output voltage VCC = MIN, VIL = MAX, IOL = 12mA 0.25 0.40 V VOL Low-level output voltage CC , IL , VIH = MIN IOL = 24mA 0.35 0.50 V VIK Input clamp voltage VCC = MIN, II = IIK –0.73 –1.5 V II Input current at maximum input voltage VCC = MAX, VI = 7.0V 0.1 mA IIH High-level input current VCC = MAX, VI = 2.7V 20 µA IIL Low-level input current VCC = MAX, VI = 0.4V –0.1 mA IOZH Off-state output current, High-level voltage applied VCC = MAX, VI = 2.7V 20 µA IOZL Off-state output current, Low-level voltage applied VCC = MAX, VI = 0.4V –20 µA IO Output current3 VCC = MAX, VO = 2.25V –30 –112 mA ICC Supply current (total) ICC VCC = MAX 7.0 10 mA ICC Supply current (total) ICCZ VCC = MAX 9.0 14 mA NOTES: 1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type. 2. All typical values are at VCC = 5V, Tamb = 25°C. 3. The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. AC ELECTRICAL CHARACTERISTICS LIMITS SYMBOL PARAMETER TEST CONDITION Tamb = 0°C to +70°C VCC = +5.0V ± 10% CL = 50pF, RL = 500Ω UNIT MIN MAX tPLH tPHL Propagation delay In to Y Waveform 2 4.0 4.0 12.0 12.0 ns tPLH tPHL Propagation delay In to Y Waveform 1 3.0 6.0 10.0 15.0 ns tPLH tPHL Propagation delay Sn to Y Waveform 1, 2 5.0 7.0 15.0 16.0 ns tPLH tPHL Propagation delay Sn to Y Waveform 1, 2 8.0 5.0 17.0 15.0 ns tPZH tPZL Propagation delay OE to Y Waveform 3 Waveform 4 2.0 3.0 8.0 9.0 ns tPHZ tPLZ Propagation delay OE to Y Waveform 3 Waveform 4 2.0 1.0 8.0 7.0 ns tPZH tPZL Propagation delay OE to Y Waveform 3 Waveform 4 2.0 3.0 8.0 9.0 ns tPHZ tPLZ Propagation delay OE to Y Waveform 3 Waveform 4 2.0 1.0 8.0 7.0 ns |
类似零件编号 - 74ALS251 |
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类似说明 - 74ALS251 |
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