TC74VHC164FTELM

Overview

The TC74VHC164FTELM is an advanced high-speed CMOS 8-bit serial-in parallel-out shift register manufactured by Toshiba Semiconductor and Storage. It operates within a supply voltage range of 2.0 V to 5.5 V and supports a maximum clock frequency of 175 MHz at 5 V. The device features push-pull outputs, two serial data inputs (A and B) for data enable functionality, and an overriding clear input. It provides balanced propagation delays and includes power-down protection on all inputs. The component is housed in a 14-TSSOP package with a width of 4.40 mm.

Feature Summary

• Serial-to-parallel conversion capability with dual serial inputs allowing one pin to function as a data enable.
• High-speed operation achieving frequencies up to 175 MHz while maintaining low power dissipation.
• Input protection circuitry enabling safe interfacing between systems with mismatched supply voltages.
• Overriding clear input that forces all outputs to a low state regardless of clock or data signals.

Applications

• General electronics applications including computer and office equipment.
• Industrial robotics control systems.
• Domestic appliances requiring data shifting functions.
• Measuring equipment utilizing serial data processing.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm the exact package type, as the base part number covers multiple physical packages. Confirm RoHS compliance status directly with the supplier, as compatibility details are subject to change. Ensure the procurement channel is authorized to guarantee product authenticity and traceability.

Selection Notes

Select this component when an 8-bit serial-to-parallel shift register is required with high-speed performance and low power consumption. It is suitable for designs needing interface capabilities between different voltage domains due to its input protection features. Consider the 14-TSSOP package constraints and ensure the application does not require usage in safety-critical or medical devices where higher reliability standards apply.

Part Context

This device belongs to the TC74VHC series of CMOS logic integrated circuits from Toshiba. It is functionally compatible with the 74ALS164 standard but utilizes silicon gate C2MOS technology for improved speed and lower power. The series is designed for general-purpose digital logic applications requiring reliable shift register operations.

Replacement Considerations

The TC74VHC164FTELM is listed as discontinued. Potential replacements include other 8-bit serial-in parallel-out shift registers from various manufacturers that match the 14-pin TSSOP footprint and electrical specifications. Verify pinout compatibility and voltage ranges before substitution.

FAQ

How many serial data inputs does the TC74VHC164FTELM have?

It has two serial data inputs, labeled A and B. One can be used as a data enable while the other serves as the primary data input.

What is the maximum operating temperature for this device?

The recommended operating temperature range is -40°C to +85°C.

Does the device support power-down protection?

Yes, power-down protection is provided on all inputs to prevent device destruction due to mismatched supply and input voltages.