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NTE NTE74HCT138 IC High-Speed CMOS Decoder

Model:

NTE74HCT138

 | Catalog #: 55051020
Price:
$0.91
$0.91
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  • TTL, LS pinout and threshold compatible
  • Fast switching: tPLH, tPLH = 12ns (typ)
  • Low power: 10μW at DC
  • High fanout: ≥ 10 LS loads

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  • Propagation delay: 13ns (typ)
  • Wide power supply range: 4.5V to 5.5V
  • Low quiescent current: 10μA (max)
  • Low-input current: 1μA (max)
  • Fanout of 10 LS−TTL loads
  • Typical hysteresis voltage: 0.6V at VCC = 4.5V
  • TTL, LS pinout and input threshold compatible

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  • Typical operating frequency: 40MHz
  • Typical propagation delay: clock to Q: 18ns
  • Low quiescent current: 80μA (max)
  • Low-input current: 1μA (max)
  • Wide-power supply range: 2V to 6V
  • TTL input compatible inputs

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  • Typical operating frequency: 40MHz
  • Typical propagation delay: Clock to Q: 18ns
  • Low quiescent current: 80μA (max)
  • Low input current: 1μA (max)
  • Wide power supply range: 2V to 6V
  • TTL input compatible inputs
  • Absolute Maximum Ratings:*
    Supply voltage, VCC: −0.5 to +7.0V
  • VIN: −1.5 to VCC +1.5V
  • VOUT: −0.5 to VCC + 0.5V
  • IIK, IOK: &plusnm;20mA
  • Per-pin IOUT: &plusnm;25mA
  • Per-pin ICC: &plusnm;50mA
  • PD: 500mW
  • Tstg: −65°C to +150°C
  • TL: +260°C

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  • Typical propagation delay: 20ns
  • Low quiescent current: 80μA (max)
  • Fanout of 10 LS−TTL loads
  • Absolute maximum ratings:*
    Supply voltage, VCC: −0.5 to +7.0Vr
  • VIN: −1.5 to VCC +1.5V
  • VOUT: −0.5 to VCC + 0.5V
  • IK, IOK: &plusnm;20mA
  • Per-pin IOUT: &plusnm;25mA
  • Per-pin ICC: &plusnm;50mA
  • PD: 500mW
  • Tstg: −65°C to +150°C
  • TL: +260°C

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  • TTL input compatible
  • Typical propagation delay: 14ns
  • 3−STATE outputs for connection to system buses
  • Low quiescent current: 80μA
  • High output drive current: 6mA (min)
  • Absolute maximum ratings:*
    Supply voltage, VCC: −0.5 to +7.0V
  • VIN: −1.5 to VCC +1.5V
  • VOUT: −0.5 to VCC + 0.5V
  • IIK, IOK: &plusnm;20mA
  • Per-pin IOUT: &plusnm;35mA
  • Per-pin: &plusnm;70mA
  • PD: 600mW
  • Tstg: −65°C to +150°C
  • TL: +260°C

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Product Summary

The NTE74HCT138 is a 3−to−8 line decoder in a 16−lead plastic DIP-type package that utilizes advanced silicon−gate CMOS technology and is well suited for memory address decoding and data routing applications. This device features high-noise immunity and low-power consumption usually associated with CMOS circuitry, yet has speeds comparable to low-power Schottky TTL logic. The NTE74HCT138 has 3 binary select inputs (A, B, and C). If the device is enabled, these inputs determine which one of the eight normally HIGH outputs will go LOW. Two active LOW and one active HIGH enables (G1, G2A, and G2B) are provided to ease the cascading decoders. The decoders' output can drive 10 low-power Schottky TTL equivalent loads and are functionally and pin equivalent to the NTE74LS138. All inputs are protected from damage due to static discharge by diodes to VCC and GND. The NTE74HCT138 is intended to interface between TTL and NMOS components and standard CMOS devices. This device is also a plug−in replacement for LS−TTL devices and can be used to reduce power consumption in existing designs.

  • TTL pinout compatible
  • Propagation delay: 20ns (typ)
  • Low quiescent current: 80μA (max)
  • Low input current: 1μA (max)
  • Fanout of 10 LS−TTL loads
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