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CD74AC257 Datasheet(PDF) 4 Page - Texas Instruments |
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CD74AC257 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 17 page 4 Low Level Output Voltage VOL VIH or VIL 0.05 1.5 - 0.1 - 0.1 - 0.1 V 0.05 3 - 0.1 - 0.1 - 0.1 V 0.05 4.5 - 0.1 - 0.1 - 0.1 V 12 3 - 0.36 - 0.44 - 0.5 V 24 4.5 - 0.36 - 0.44 - 0.5 V 75 (Note 6, 7) 5.5 - - - 1.65 - - V 50 (Note 6, 7) 5.5 ----- 1.65 V Input Leakage Current II VCC or GND - 5.5 - ±0.1 - ±1- ±1 µA Three-State Leakage Current IOZ VIH or VIL VO =VCC or GND - 5.5 - ±0.5 - ±5- ±10 µA Quiescent Supply Current MSI ICC VCC or GND 0 5.5 - 8 - 80 - 160 µA ACT TYPES High Level Input Voltage VIH - - 4.5 to 5.5 2-2-2- V Low Level Input Voltage VIL - - 4.5 to 5.5 - 0.8 - 0.8 - 0.8 V High Level Output Voltage VOH VIH or VIL -0.05 4.5 4.4 - 4.4 - 4.4 - V -24 4.5 3.94 - 3.8 - 3.7 - V -75 (Note 6, 7) 5.5 - - 3.85 - - - V -50 (Note 6, 7) 5.5 ---- 3.85 - V Low Level Output Voltage VOL VIH or VIL 0.05 4.5 - 0.1 - 0.1 - 0.1 V 24 4.5 - 0.36 - 0.44 - 0.5 V 75 (Note 6, 7) 5.5 - - - 1.65 - - V 50 (Note 6, 7) 5.5 ----- 1.65 V Input Leakage Current II VCC or GND - 5.5 - ±0.1 - ±1- ±1 µA Three-State or Leakage Current IOZ VIH or VIL VO =VCC or GND - 5.5 - ±0.5 - ±5- ±10 µA Quiescent Supply Current MSI ICC VCC or GND 0 5.5 - 8 - 80 - 160 µA Additional Supply Current per Input Pin TTL Inputs High 1 Unit Load ∆ICC VCC -2.1 - 4.5 to 5.5 - 2.4 - 2.8 - 3 mA NOTES: 6. Test one output at a time for a 1-second maximum duration. Measurement is made by forcing current and measuring voltage to minimize power dissipation. 7. Test verifies a minimum 50 Ω transmission-line-drive capability at 85oC, 75Ω at 125oC. DC Electrical Specifications (Continued) PARAMETER SYMBOL TEST CONDITIONS VCC (V) 25oC -40oC TO 85oC -55oC TO 125oC UNITS VI (V) IO (mA) MIN MAX MIN MAX MIN MAX CD54/74AC257, CD54/74ACT257, CD74ACT258 |
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