Nexperia USA Inc. 74LVC157ADB,118

Overview

74LVC157ADB,118 from Nexperia is a quad 2-input CMOS multiplexer with independent data select (S) and active-low enable (E) inputs, operating from 1.2 V to 3.6 V supply. It features Schmitt-trigger inputs for noise immunity, overvoltage-tolerant inputs up to 5.5 V, and supports mixed-voltage translation between 3.3 V and 5 V logic domains. It is used in digital signal routing within industrial control I/O modules.

For engineers reviewing the 74LVC157ADB,118 datasheet, 74LVC157ADB,118 pinout, 74LVC157ADB,118 application, or 74LVC157ADB,118 equivalent, key selection criteria include input voltage tolerance (5.5 V), propagation delay at 3.3 V (max 6.3 ns), output drive strength (±24 mA), wide temperature range (–40 °C to +125 °C), and SO16 package compatibility with legacy PCB footprints.

Technical Context

The device implements four independent 2:1 multiplexers sharing one common select line (S) and one global active-low enable (E). Each channel routes either I0 or I1 to its corresponding Y output based on S state, while E forces all outputs low when asserted. The logic is fully static CMOS with no internal latching or clocking.

All inputs include Schmitt-trigger circuitry, enabling robust operation with slow-rising/falling signals and reducing susceptibility to noise-induced glitches. Input voltage tolerance to 5.5 V allows direct interfacing with 5 V TTL outputs while powered from 1.65–3.6 V supplies - a key enabler for level translation without external biasing.

Key Specifications

Pinout & Package

74LVC157ADB,118 is supplied in the SO16 (SOT109-1) plastic small outline package: 16-pin, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads, JEDEC MS-012 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC157APWR and 74LVC157APW,118, the 74LVC157ADB,118 offers drop-in replacement in existing SO16 layouts, lower assembly cost via mature wave-solder processes, and proven reliability in long-lifecycle industrial deployments - making it optimal for design reuse and cost-sensitive volume production.

Availability

74LVC157ADB,118 is available at Aetrix Electronics and suitable for industrial automation, test equipment, and embedded control systems requiring stable component supply across extended product lifecycles.

Supply support for 74LVC157ADB,118 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

Nexperia is a leading semiconductor manufacturer headquartered in Nijmegen, Netherlands, specializing in high-performance, energy-efficient logic, analog, and discrete components for industrial, automotive, and consumer markets.

The 74LVC series targets low-voltage, high-speed digital logic applications where power efficiency, noise immunity, and mixed-voltage interoperability are critical - particularly in programmable logic interfaces and microcontroller peripheral expansion.

FAQ

Is 74LVC157ADB,118 compatible with 5 V TTL inputs while powered at 3.3 V?

Yes. Its inputs tolerate up to 5.5 V regardless of VCC, allowing direct connection to 5 V TTL outputs without level shifters. This is verified per datasheet Section 7 (Recommended Operating Conditions) and Table 4 (Limiting Values), where VI(max) = +6.5 V and overvoltage tolerance is explicitly stated as a feature.

What is the maximum clock/data toggle rate supported by this multiplexer?

Based on max propagation delay of 6.3 ns at VCC = 3.3 V (Table 7), the device supports clean signal routing up to ~150 MHz toggle frequency assuming minimal interconnect loading. This assumes CL ≤ 50 pF and RL = 500 Ω per test conditions in Table 8 - exceeding these may increase delay nonlinearly.

Does the enable pin (E) place outputs in high-impedance state?

No. Pin 15 (E) is an active-low enable that forces all Y outputs LOW when HIGH; it does not tri-state the outputs. When E is LOW, outputs follow the S-controlled multiplexer function normally. This is confirmed in Table 3 (Function Table) and Section 1 (General Description): "A HIGH on E forces all the outputs (1Y to 4Y) LOW."

Can this part operate reliably at 1.2 V supply?

Yes. The datasheet specifies full functionality down to 1.2 V (Section 7, Table 5), with guaranteed VIH/VIL thresholds and output drive (e.g., VOH ≥ 1.08 V at IO = –4 mA). However, propagation delay increases to 16 ns at 1.2 V, and dynamic power drops significantly - suitable for ultra-low-power sleep-mode signal routing.