Renesas 74HC157TELL-E

Overview

74HC157TELL-E from Renesas Electronics is a quad 2-to-1-line data selector/multiplexer with noninverted outputs, designed for digital signal routing in logic control and data path management. It operates across 2–6 V supply, delivers 12 ns typical propagation delay (CL = 50 pF), supports fanout of 10 LSTTL loads, and features low quiescent current (4 µA max at 25°C). It is used in address/data bus selection within microcontroller peripheral interfaces.

For engineers reviewing the 74HC157TELL-E datasheet, 74HC157TELL-E pinout, 74HC157TELL-E application, or 74HC157TELL-E equivalent, key selection criteria include strobe-controlled output enable, single-select decoding architecture, TSSOP-16 package compatibility, and guaranteed operation from –40°C to +85°C.

Technical Context

The 74HC157TELL-E integrates four independent 2-input multiplexers sharing one common select line and one active-low strobe input. When strobe is low, outputs Y1–Y4 reflect selected inputs (A or B per channel); when strobe is high, all outputs are forced low - enabling synchronized data gating.

Its internal select decoding eliminates external logic for channel selection, and its CMOS design ensures rail-to-rail input voltage tolerance (0 to VCC), low input current (±0.1 µA max), and compatibility with both HC and HCT logic families via TTL-level input thresholds.

Key Specifications

Pinout & Package

TSSOP-16 package (PTSP0016JB-A / TTP-16DAV), 4.4 mm × 5.0 mm body, 0.65 mm pitch, lead-free Ni/Pd/Au plating, rated for surface-mount reflow assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-to-1 multiplexer applications.

Compared with SN74HC157DR and MC74HC157ADTR2G, the 74HC157TELL-E offers the smallest PCB footprint among TSSOP variants, lowest quiescent current, and Renesas' industrial temperature qualification - making it optimal for high-density, low-power, and extended-temperature embedded designs.

Availability

74HC157TELL-E is available at Aetrix Electronics and suitable for industrial control systems, test instrumentation, and microcontroller peripheral expansion requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for 74HC157TELL-E includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for automotive, industrial, and IoT applications.

The 74HC157TELL-E belongs to Renesas' legacy HC-series logic family, engineered for robust performance in industrial-grade digital systems where reliability, wide supply range, and interoperability with mixed-voltage architectures are essential.

FAQ

What is the maximum operating frequency supported by the 74HC157TELL-E?

The 74HC157TELL-E does not specify a maximum clock frequency, but its 12 ns typical propagation delay at 4.5 V implies reliable operation up to approximately 40 MHz in well-terminated, low-capacitance circuits. Actual usable frequency depends on load capacitance, supply stability, and PCB layout - for 74HC157TELL-E, ensure total node capacitance remains ≤50 pF to meet datasheet timing guarantees.

Does the 74HC157TELL-E support 3.3 V logic levels?

Yes, the 74HC157TELL-E fully supports 3.3 V operation: its VCC range includes 3.3 V, input thresholds scale with supply (VIH ≈ 2.1 V min at 3.3 V), and outputs swing rail-to-rail. The 74HC157TELL-E interfaces directly with 3.3 V microcontrollers and FPGAs without level translation when VCC = 3.3 V.

How does the strobe input (G̅) function in the 74HC157TELL-E?

The strobe input (Pin 9, active-low) enables or disables all four outputs simultaneously: when G̅ = low, outputs follow the selected A/B inputs; when G̅ = high, all Y outputs are forced low regardless of S or data inputs. This feature allows the 74HC157TELL-E to act as a synchronous bus gate - critical for avoiding contention during data transfers.

Is the 74HC157TELL-E pin-compatible with the HD74HC157FPEL?

No - the 74HC157TELL-E uses TSSOP-16 (PTSP0016JB-A), while the HD74HC157FPEL uses SOP-16 (PRSP0016DH-B) with different land pattern dimensions and thermal pad requirements. Though both have identical pin numbering and logic function, their footprints are not interchangeable without PCB redesign. The 74HC157TELL-E requires the narrower 4.4 mm × 5.0 mm TSSOP layout.

What is the ESD rating of the 74HC157TELL-E?

The 74HC157TELL-E meets JEDEC JS-001 Class 2 HBM (Human Body Model) ESD rating of ±2000 V, as confirmed by Renesas' qualification testing. This rating applies to all pins including VCC and GND. For handling, use standard ESD precautions - the 74HC157TELL-E is not rated for machine model (MM) or charged device model (CDM) beyond specification limits.