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TC74HC148AP - 8-to-3 Line Priority Encoder

Features

  • High speed: tpd = 15 ns (typ. ) at VCC = 5 V.
  • Low power dissipation: ICC = 4 μA (max) at Ta = 25°C.
  • High noise immunity: VNIH = VNIL = 28% VCC (min).
  • Output drive capability: 10 LSTTL loads.
  • Symmetrical output impedance: |IOH| = IOL = 4 mA (min).
  • Balanced propagation delays: tpLH ∼.
  • tpHL.
  • Wide operating voltage range: VCC (opr) = 2 to 6 V.
  • Pin and function compatible with 74LS148 Pin Assignment TC74HC148AP TC74HC148.

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Datasheet Details

Part number TC74HC148AP
Manufacturer Toshiba
File Size 271.76 KB
Description 8-to-3 Line Priority Encoder
Datasheet download datasheet TC74HC148AP Datasheet

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Full PDF Text Transcription

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TC74HC148AP/AF TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74HC148AP, TC74HC148AF 8-to-3 Line Priority Encoder The TC74HC148A is a high speed CMOS 8-to-3 LINE ENCODER fabricated with silicon gate C2MOS technology. It achieves the high speed operation similar to equivalent LSTTL while maintaining the CMOS low power dissipation. All data inputs and outputs of these encoders are active at the low logic level. The encoder detects a low level of the highest order among eight input signals and outputs the corresponding signal position in binaly code. Enable Input EI and Enable Output EO are used to easily cascade without using external circuits. All inputs are equipped with protection circuits against static discharge or transient excess voltage.
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