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TC74VHC138FK The Toshiba TC74VHC138FK is a high-speed CMOS 3-to-8 line decoder. It features low power dissipation and a wide operating voltage range.
Mfr Part #:

TC74VHC138FK

Available from 2 distributors
Mfr Name: Toshiba
Toshiba
The Toshiba TC74VHC138FK is a high-speed CMOS 3-to-8 line decoder. It features low power dissipation and a wide operating voltage range.
✓ Total Stock: 312,000 pcs
$ Price Range: $1.27

TC74VHC138FK Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Romaks Technologies ✓
Non-Authorised Inventory information
301,000 pcs
On Request
301000 pcs On Request 1 On Request On Request On Request On Request On Request
Optech Co.,Limited ✓
Non-Authorised Inventory information
11,000 pcs
On Request
11000 pcs On Request 1 On Request On Request 1508+ On Request On Request
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TC74VHC138FK Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Input Voltage
Operating Voltage
Output Voltage
Propagation Delay
Supply Current
Supply Voltage
Weight
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TC74VHC138FK Description

Short technical summary and product information.

The Toshiba TC74VHC138FK is an advanced high-speed CMOS 3-to-8 line decoder fabricated with silicon gate C2MOS technology. It achieves high-speed operation similar to equivalent Bipolar Schottky TTL while maintaining low power dissipation.

 

When the device is enabled, 3 binary select inputs (A, B, and C) determine which one of the outputs (0Y-7Y) will go low. The device features a wide operating voltage range from 2V to 5.5V, making it suitable for interfacing between 5V and 3V systems. An input protection circuit prevents device destruction due to mismatched supply and input voltages.

 

Key features include a propagation delay of 5.7 ns (typical) at VCC = 5V and a low supply current of 4 μA (maximum) at 25°C. The decoder also offers high noise immunity with VNIH = VNIL = 28% VCC (minimum) and power-down protection on all inputs.

 

This decoder is pin and function compatible with the 74ALS138. It is available in various packages, including the FK variant.

TC74VHC138FK Quick Information

Product Type: 3-to-8 Line Decoder
Series: 74VHC
Canonical Name: TC74VHC138FK 3-to-8 Line Decoder
Subcategory: 3-to-8 Line Decoder

TC74VHC138FK Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

TC74VHC138FK Estimated Pricing

Qty Low High
1+ $1.27 $1.27

Estimated market price range - modelled values for guidance only, not live distributor offers.

TC74VHC138FK Features

  • High-speed CMOS 3-to-8 line decoder.
  • Low power dissipation with 4 μA max ICC.
  • Wide operating voltage range from 2V to 5.5V.
  • High noise immunity with 28% VCC minimum.
  • Power down protection on all inputs.

TC74VHC138FK Applications

  • Ideal for high-speed logic decoding circuits.
  • Used in low-power digital systems.
  • Suitable for signal demultiplexing applications.
  • Compatible with standard CMOS logic interfaces.

TC74VHC138FK FAQs

6 frequently asked questions generated from this part’s specifications.
What is the typical propagation delay for the TC74VHC138FK?

The typical propagation delay is 5.7 ns at VCC = 5 V.

What is the maximum supply current for the TC74VHC138FK?

The maximum supply current is 4 μA at Ta = 25°C.

What is the operating voltage range for the TC74VHC138FK?

The operating voltage range is 2 V to 5.5 V.

What is the RoHS status of the TC74VHC138FK?

The RoHS status is RoHS3 Compliant.

What is the Moisture Sensitivity Level (MSL) for the TC74VHC138FK?

The Moisture Sensitivity Level is 1 Unlimited.

What is the REACH status for the TC74VHC138FK?

The REACH status is REACH Unaffected.

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