NXP Semiconductors 74HCT4353N,112

Overview

74HCT4353N,112 from NXP Semiconductors (formerly Philips) is a triple 2-channel analog multiplexer/demultiplexer with address latches and dual enable control. It features ±5 V analog signal handling, 70 Ω typical ON-resistance at 5 V supply, and TTL-compatible digital inputs. It operates as a bidirectional analog switch array in data acquisition systems interfacing 5 V logic with bipolar analog signals.

For engineers reviewing the 74HCT4353N,112 datasheet, 74HCT4353N,112 pinout, 74HCT4353N,112 application, or 74HCT4353N,112 equivalent, key selection criteria include latch-enabled channel selection timing, dual enable logic polarity (E1 active LOW, E2 active HIGH), ON-resistance matching across channels (∆RON ≤ 6 Ω), and guaranteed operation over −40 °C to +125 °C ambient.

Technical Context

The 74HCT4353N,112 implements three independent 2:1 analog multiplexers, each with two bidirectional switches (nY0–nZ and nY1–nZ), shared select lines S1–S3, and a common latch enable (LE). Its HCT logic family ensures 4.5–5.5 V digital input compatibility while supporting analog rails from VEE = −4.5 V to VCC = +5.5 V.

Switch control uses break-before-make timing to prevent transient shorts; channel selection is latched on the HIGH-to-LOW transition of LE. Digital inputs (E1, E2, S1–S3, LE) are TTL-level compatible, while analog terminals (nY0/nY1/nZ) tolerate ±5 V swing relative to VEE/GND, with VCC−VEE ≤ 10 V.

Key Specifications

Pinout & Package

DIP-20 plastic package (JEDEC MS-001), 2.54 mm pitch, through-hole mounting. Pin 10 = GND, Pin 20 = VCC, Pin 9 = VEE, Pin 11 = LE (active LOW latch enable).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog multiplexer applications.

Compared with CD74HC4353M96 and SN74LV4053APWR, the 74HCT4353N,112 uniquely combines TTL-compatible inputs, ±5 V analog capability, and latch functionality in a single DIP package - making it irreplaceable in legacy 5 V industrial controllers requiring bipolar signal routing without redesign.

Availability

74HCT4353N,112 is available at Aetrix Electronics and suitable for industrial data acquisition, automotive sensor interfaces, automated test equipment, and medical instrumentation requiring stable component supply across long production lifecycles.

Supply support for 74HCT4353N,112 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

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Philips' pioneering logic IC development.

The 74HCT4353N,112 belongs to NXP's legacy 74HCT logic family, designed specifically for robust analog-digital interface applications where TTL-level control must reliably manage bipolar analog signals in harsh environments.

FAQ

What is the maximum allowable VCC−VEE voltage for the 74HCT4353N,112?

The 74HCT4353N,112 specifies an absolute maximum VCC−VEE of 10.0 V. Operation at 5.0 V VCC and −4.5 V VEE (9.5 V differential) is within specification and enables full ±5 V analog signal swing. Exceeding 10.0 V risks permanent damage to the internal analog switches and violates JEDEC 7A compliance.

Does the 74HCT4353N,112 support true bidirectional analog signal flow?

Yes, the 74HCT4353N,112 supports fully bidirectional analog signal routing. Each switch (e.g., 1Y0 ↔ 1Z) conducts equally in both directions, with identical ON-resistance and capacitance characteristics regardless of signal direction - verified by symmetric RON measurements and functional diagrams in the Philips datasheet.

Can the 74HCT4353N,112 operate with VEE = GND for digital-only applications?

Yes, the 74HCT4353N,112 functions as a standard digital 2:1 multiplexer when VEE = GND. In this configuration, analog terminals swing from 0 V to VCC (typically 5 V), and the device meets all 74HCT logic thresholds. The "analog" designation reflects capability, not mandatory usage mode.

What is the purpose of the two enable inputs E1 and E2 on the 74HCT4353N,112?

E1 (active LOW) and E2 (active HIGH) provide complementary enable logic to simplify system-level control. Both must be asserted simultaneously (E1 = LOW, E2 = HIGH) to activate any channel. This dual-enable scheme prevents accidental channel activation during power-up or reset sequences in safety-critical systems.

How does the latch enable (LE) function affect timing in the 74HCT4353N,112?

The LE input latches the S1–S3 select bits on its HIGH-to-LOW transition. While LE is HIGH, the mux responds transparently to S1–S3 changes; when LE goes LOW, the selected channel remains active regardless of subsequent S1–S3 changes. This decouples digital address timing from analog signal timing - essential for glitch-free sampling in synchronous data acquisition systems using the 74HCT4353N,112.