Nexperia USA Inc. 74HC151DB,118

Overview

74HC151DB,118 from Nexperia is an 8-input CMOS multiplexer with complementary outputs (Y and Y), three binary select inputs (S0–S2), one active-low enable input (E), and eight data inputs (I0–I7). It operates from 2.0 V to 6.0 V, delivers propagation delays as low as 15 ns at VCC = 6.0 V, and is rated for -40 °C to +125 °C operation in the SSOP16 package. It routes one selected input to Y/Y based on S0–S2 state when E is LOW, enabling digital signal routing in address decoding and data selection circuits.

For engineers reviewing the 74HC151DB,118 datasheet, 74HC151DB,118 pinout, 74HC151DB,118 application, or 74HC151DB,118 equivalent, this page provides verified functional behavior, validated SSOP16 pin mapping, confirmed timing specs across voltage/temperature, real-world multiplexer use cases, and two documented alternative parts with explicit electrical and application differences.

Technical Context

The 74HC151DB,118 implements a single-pole, 8-throw analog/digital switch controlled by synchronous 3-bit binary addressing. Its internal logic decodes S0–S2 to activate exactly one of eight transmission gates, connecting the corresponding Ix input to Y while inverting it to Y. The enable input E overrides selection: when HIGH, both outputs are forced static (Y = LOW, Y = HIGH), independent of select states.

It uses standard CMOS silicon with clamp diodes on all inputs, allowing safe interfacing to voltages exceeding VCC when current-limited. Input thresholds follow CMOS levels (VIH ≥ 70% VCC, VIL ≤ 30% VCC), ensuring noise immunity >40% of VCC across its full 2.0–6.0 V supply range and specified operation up to +125 °C.

Key Specifications

Pinout & Package

74HC151DB,118 is housed in a 16-lead SSOP (Shrink Small Outline Package) per SOT338-1, with 0.65 mm lead pitch, body width 4.4 mm, and exposed pad not present. Pin 1 index is marked by a beveled corner.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-input multiplexer applications.

Compared with 74HC151D,118, the DB variant saves 35% board area and improves thermal response; versus 74HCT151DB, it trades TTL input compatibility for 1.3 V higher noise immunity at 4.5 V supply - critical in electrically noisy motor-control environments.

Availability

74HC151DB,118 is available at Aetrix Electronics and suitable for industrial automation controllers, automotive body electronics modules, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC151DB,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 global semiconductor expert focused on high-volume, high-reliability logic, discrete, and MOSFET solutions, with manufacturing rooted in process control and automotive-grade quality systems.

The 74HC151DB,118 belongs to Nexperia's HC logic family - engineered for low-power, wide-supply digital interfacing in space-constrained industrial and consumer applications where pin efficiency and thermal performance are critical.

FAQ

What is the maximum clock frequency supported by the 74HC151DB,118?

The 74HC151DB,118 does not operate on a clock; it is a combinational logic device. Its maximum usable data rate depends on propagation delay and load capacitance. At VCC = 6.0 V and CL = 50 pF, tpd(In→Y) is 29 ns max, supporting reliable switching up to approximately 17 MHz for repetitive pattern generation. For single-event selection, setup/hold times are not specified - inputs may change asynchronously relative to enable transitions.

Can the 74HC151DB,118 be used with 3.3 V microcontrollers?

Yes. With VCC = 3.3 V, VIH is guaranteed ≥2.31 V and VIL ≤1.0 V per datasheet Table 6, providing 1.0 V noise margin against 3.3 V CMOS outputs. Output VOH is ≥3.1 V at IO = -4 mA, ensuring solid HIGH recognition by 3.3 V receivers. No level-shifting circuitry is required for bidirectional compatibility.

Is the SSOP16 package (SOT338-1) RoHS compliant and lead-free?

Yes. The 74HC151DB,118 is manufactured in full compliance with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Its SSOP16 package uses lead-free matte tin terminations, and the device carries the "Pb-free" marking per Nexperia's product labeling standards. Full material declarations are available upon request.

Does the 74HC151DB,118 support hot insertion or live swapping?

No. The device lacks hot-swap protection circuitry such as power-up sequencing control or I/O slew-rate limiting. Applying VCC while inputs are driven can cause latch-up or excessive current due to internal parasitic SCR activation. Power must be applied before asserting any input signals, and GND must be established first per Nexperia's recommended handling guidelines.