NXP Semiconductors N74F153D,623

Overview

N74F153D,623 from Philips Semiconductors is a dual 4-line to 1-line TTL multiplexer in 16-pin SO package (SOT109-1), featuring non-inverting outputs, independent active-low enables (Ea, Eb), and common select inputs (S0, S1). It selects two parallel data bits from four input sources per section with 7.0 ns typical propagation delay, 12 mA typical supply current, and operates at 5.0 V ±10% over 0°C to +70°C - used in digital logic routing, address decoding, and bus multiplexing in industrial control systems.

For engineers reviewing the N74F153D,623 datasheet, N74F153D,623 pinout, N74F153D,623 application, or N74F153D,623 equivalent, key selection considerations include enable independence, common select architecture, TTL-compatible input thresholds (VIL = 0.8 V, VIH = 2.0 V), output drive capability (IOL = 20 mA), and SO16 thermal and mounting constraints.

Technical Context

The N74F153D,623 implements two independent 4:1 multiplexer sections sharing S0/S1 select lines but with separate active-low enables (Ea, Eb), enabling asynchronous gating of each output (Ya, Yb). Each section routes one of four data inputs (I0n–I3n) to its output based on binary S0/S1 state, with outputs forced low when respective enable is high.

It adheres to FAST TTL logic family specifications: VCC = 4.5–5.5 V, input loading of 1.0 unit load (20 µA/0.6 mA), and output fan-out of 50/33 (high/low), supporting direct interfacing with standard 74F-series devices without level-shifting or buffering.

Key Specifications

Pinout & Package

Package: 16-pin plastic small outline (SO), SOT109-1, 3.9 mm body width, gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual 4:1 multiplexer applications.

Compared with SN74F153N and 74ACT153SCX, the N74F153D,623 offers optimal balance of proven FAST TTL speed, SO16 manufacturability, and drop-in compatibility with existing 74F-based schematics - making it preferred for volume production of commercial-grade control logic where footprint and thermal profile are constrained.

Availability

N74F153D,623 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, legacy bus address decoding, and test equipment signal routing requiring stable component supply, long-term obsolescence management, and guaranteed traceable sourcing.

Supply support for N74F153D,623 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

Philips Semiconductors (now NXP Semiconductors) is a global semiconductor leader founded in the Netherlands, specializing in analog, logic, and interface ICs for industrial, automotive, and consumer applications.

The 74F logic family - including the N74F153D,623 - was engineered for high-speed commercial-grade digital systems requiring robust noise immunity, predictable propagation delays, and seamless integration with legacy TTL infrastructure.

FAQ

What is the maximum operating frequency supported by the N74F153D,623?

The N74F153D,623 does not specify a maximum clock frequency, but its 7.0 ns typical propagation delay (In→Yn) supports reliable operation in digital systems with signal periods ≥14 ns - corresponding to a practical upper limit of approximately 70 MHz for clean edge-triggered applications. System-level timing must account for worst-case 10.5 ns max delay and interconnect skew.

Can the N74F153D,623 be used with 3.3 V logic systems?

No - the N74F153D,623 is a 5 V-only FAST TTL device requiring VCC = 4.5–5.5 V. Its input thresholds (VIL = 0.8 V, VIH = 2.0 V) and output levels (VOH ≥ 2.7 V, VOL ≤ 0.5 V) are incompatible with 3.3 V CMOS logic without level-shifting. For 3.3 V systems, consider the 74ACT153SCX instead.

Is the N74F153D,623 pin-compatible with the SN74F153N?

Yes - the N74F153D,623 (SO16, SOT109-1) and SN74F153N (DIP16, SOT38-4) share identical pin numbering, function mapping, and electrical specifications. Only the package type differs; PCB layout must be updated for SO vs. DIP footprints, but schematic symbols and net connectivity remain unchanged.

What happens to Ya and Yb when both Ea and Eb are high?

When Ea = high and Eb = high, both Ya and Yb are forced low regardless of S0, S1, or input states - per the function table's "En = H" condition. This provides a synchronous disable mode for blanking both outputs simultaneously, useful for system reset or power-down sequencing in the N74F153D,623.

Does the N74F153D,623 support hot-swap or live-insertion?

No - the N74F153D,623 lacks hot-swap protection circuitry. Applying VCC before GND, or connecting inputs before supply stabilization, may exceed absolute maximum ratings (e.g., VIK = –1.2 V clamp voltage) and cause latch-up or permanent damage. Always follow proper power sequencing: GND first, then VCC, then inputs.