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NTE74HCT244 IC High-Speed CMOS Buffer

Model:

NTE74HCT244

 | Catalog #: 55051026
Price:
$1.63
$1.63
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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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  • Wide power supply range: 2V to 6V
  • High-noise immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
  • Common clock and asynchronous master reset
  • Positive-edge triggering
  • Buffered inputs
  • Fanout (over temp rng):
    Std. outputs: 10 LS−TTL loads
    Bus driver outputs: 15 LS−TTL loads
  • Balanced propagation delay and transition times
  • Significant power reduction compared to LS−TTL logic ICs
  • Absolute maximum ratings:*
    VCC: −0.5 to +7.0V
  • IIK, IOK: &plusnm;20mA
  • DC drain current (per output), IOUT: &plusnm;25mA
  • DC output source or sink current (per output), IOUT: &plusnm;25mA
  • DC VCC or GND current (per pin), ICC: &plusnm;50mA
  • TJ: +150°C
  • Tstg: −65°C to +150°C
  • RthJA: 69°C/W
  • TL: +300°C

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  • TTL, LS pin−out and threshold compatible
  • Fast switching: tPLH, tPHL = 10ns (typ)
  • Low power: 10μW at DC
  • High fan−out, 10 LS−TTL loads
  • 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;20mA
  • PD: 600mW
  • Tstg: −65° to +150°C
  • TL: +260°C

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  • Absolute maximum ratings:
    V 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 ICC: &plusnm;70mA
  • PD: 600mW
  • Tstg: −65° to +150°C
  • TL: +260°C

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Product Summary

The NTE74HCT240 (Inverting Outputs) and NTE74HCT244 (Non−Inverting Outputs) are 3−STATE buffers in a 20−Lead DIP-type package that utilize advanced silicon−gate CMOS technology and are general purpose high speed buffers. They possess high drive current outputs which enable high-speed operation even when driving large bus capacitances. These circuits achieve speeds comparable to low-power Schottky devices, while retaining the low power consumption of CMOS. Both devices are TTL input compatible and have a fanout of 15 LS−TTL equivalent inputs. Each device has two active low enables (1G and 2G), and each enable independently controls 4 buffers. These devices are intended to interface between TTL and NMOS components and standard CMOS devices, are also plug−in replacements for LS−TTL devices and can be used to reduce power consumption in existing designs. All inputs are protected from damage due to static discharge by diodes to VCC and GND.

  • 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 ICC: &plusnm;70mA
  • PD: 600mW
  • Tstg: −65°C to +150°C
  • TL: +260°C
Pricing and availability: Please note that all prices are subject to change without prior notice. Prices advertised on this site are for online orders only. Prices on some items may differ from those advertised in RadioShack stores. All merchandise may not be available at all stores, and all stores may not participate in all sales promotions. We recommend you contact the store to confirm product availability and price.

Disclaimer: * Absolute Maximum Ratings are those values beyond which damage to the device may occur. Unless otherwise specified, all voltages are referenced to GND. Power Dissipation temperature derating: 12mW/°C from +65°C to +85°C.

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