Product Summary

The TC74AC138F is an advanced high speed CMOS 3-to-8 LINE DECODER fabricated with silicon gate and double-layer metal wiring C2MOS technology. The TC74AC138F achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. When the TC74AC138F is enabled, 3 Binary Select inputs (A, B and C) determine which one of the outputs ( Y0 - Y7 ) will go low. When enable input G1 is held low or either G2A or G2B is held high, decoding function is inhibited and all outputs go high. G1, G2A , and G2B inputs are provided to ease cascade connection and for use as an address decoder for memory systems.

Parametrics

TC74AC138F absolute maximum ratings: (1)Supply voltage range VCC: -0.5 to 7.0 V; (2)DC input voltage VIN: -0.5 to VCC + 0.5 V; (3)DC output voltage VOUT: -0.5 to VCC + 0.5 V; (4)Input diode current IIK: ±20 mA; (5)Output diode current IOK: ±50 mA; (6)DC output current IOUT: ±50 mA; (7)DC VCC/ground current ICC: ±200 mA; (8)Power dissipation PD 500 (DIP): 180mW; (9)Storage temperature Tstg: -65 to 150 ℃.

Features

TC74AC138F features: (1)High speed: tpd = 5.9 ns (typ.)at VCC = 5 V; (2)Low power dissipation: ICC = 8 μA (max)at Ta = 25℃; (3)High noise immunity: VNIH = VNIL = 28% VCC (min); (4)Symmetrical output impedance: |IOH| = IOL = 24 mA (min)Capability of driving 50 Ω, transmission lines; (5)Balanced propagation delays: tpLH ∼ tpHL; (6)Wide operating voltage range: VCC (opr)= 2 to 5.5 V; (7)Pin and function compatible with 74F138.

Diagrams

TC74AC138F pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
TC74AC138F
TC74AC138F

Other


Data Sheet

Negotiable 
TC74AC138FN
TC74AC138FN


IC DECODER 3-TO-8 LINE 16-SOL

Data Sheet

0-1000: $0.14
TC74AC138FN(ELP)
TC74AC138FN(ELP)


IC DECODER 3-TO-8 LINE 16-SOL

Data Sheet

0-2500: $0.13