Texas Instruments SN74F153NSR

Overview

SN74F153NSR from Texas Instruments is a dual 4-line to 1-line data selector/multiplexer IC with independent strobe (enable) inputs per section, operating at 4.5–5.5 V supply, supporting 0°C to 70°C ambient, and delivering tPLH/tPHL propagation delays as low as 2.2 ns (C→Y) and 3.7 ns (A/B→Y). It performs parallel-to-serial conversion in TTL-compatible digital logic systems such as address decoding and signal routing in industrial control interfaces.

For engineers reviewing the SN74F153NSR datasheet, SN74F153NSR pinout, SN74F153NSR application, or SN74F153NSR equivalent, key selection criteria include its dual-section enable control, guaranteed 20 mA low-level output drive, 5 V TTL compatibility, SOP-16 package footprint, and verified operation across commercial temperature range without derating.

Technical Context

The SN74F153NSR implements two independent 4:1 multiplexers sharing common select lines A and B, each with dedicated active-low strobe inputs (1G and 2G) enabling cascading and hierarchical data routing. Its internal architecture uses binary-decoded AND-OR logic with inverters and drivers for full decoding of select inputs.

Each section selects one of four data inputs (C0–C3) based on A/B state and passes it to the corresponding output (1Y or 2Y) only when its strobe is asserted (low). Propagation delay varies by input-to-output path: C→Y is fastest (2.2 ns min), while G→Y and A/B→Y exhibit higher latency (3.7 ns min), reflecting gate depth differences in enable vs. select paths.

Key Specifications

Pinout & Package

SOP-16 (NS) package: 16-pin surface-mount small-outline plastic package, 8.1 mm × 10.4 mm body size, 1.27 mm lead pitch, 2.00 mm max height, RoHS-compliant NIPDAU lead finish, MSL Level-1 (260°C peak reflow).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74F153NSR, SN74LS153N trades speed for broader vendor availability and lower cost in through-hole designs, while SN74HC153DR offers voltage flexibility and ultra-low quiescent current at the expense of TTL input compatibility and slightly higher propagation delay.

Availability

SN74F153NSR is available at Aetrix Electronics and suitable for industrial control panels, legacy microcontroller peripherals, and digital test instrumentation requiring stable component supply and long-term obsolescence mitigation.

Supply support for SN74F153NSR 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

Texas Instruments is a global semiconductor leader founded in 1930, specializing in analog, embedded processing, and logic solutions with broad manufacturing scale and automotive-grade reliability validation.

The SN74F153NSR belongs to TI's 74F family of fast TTL logic devices, engineered for high-speed digital systems requiring predictable propagation delay, robust noise immunity, and direct compatibility with legacy 5 V logic architectures.

FAQ

What is the maximum clock frequency supported by SN74F153NSR for reliable data selection?

The SN74F153NSR does not operate on a clock signal - it is a combinatorial multiplexer. Its usable data rate depends on propagation delay and system timing margins. With tPLH/tPHL as low as 2.2 ns (C→Y), it supports clean selection of signals with edges spaced ≥10 ns apart, enabling effective use in systems with >100 MHz toggle rates when synchronized externally.

Does SN74F153NSR require external pull-up resistors on its outputs?

No, SN74F153NSR features totem-pole TTL outputs capable of actively driving both high and low states. Its VOH is guaranteed ≥2.5 V at IOH = −1 mA and VOL ≤0.5 V at IOL = 20 mA, eliminating need for pull-ups in standard TTL interfacing - though local decoupling capacitors on VCC are mandatory for noise suppression.

Can SN74F153NSR be used in place of SN74F153N in an existing design?

Yes - SN74F153NSR and SN74F153N share identical logic function, DC specifications, AC timing, and pinout. The only differences are package (SOP-16 vs. PDIP-16) and thermal characteristics (both rated 0°C to 70°C). Layout redesign is required for surface-mount assembly, but no schematic or firmware changes are needed.

What is the meaning of the "NS" in SN74F153NSR?

The "NS" in SN74F153NSR denotes Texas Instruments' Small-Outline Plastic (SOP) package variant with 16 leads. It corresponds to package drawing NS0016A, specifying 8.1 mm × 10.4 mm body size, 1.27 mm lead pitch, and RoHS-compliant NIPDAU plating - distinct from "N" (PDIP) and "D" (SOIC) variants.

Is SN74F153NSR compatible with 3.3 V logic systems?

No - SN74F153NSR is a 5 V TTL device requiring 4.5–5.5 V supply and exhibiting VIH = 2.0 V minimum. While it may function with 3.3 V inputs under some conditions, TI does not guarantee operation below VCC = 4.5 V, and 3.3 V outputs cannot reliably drive its inputs due to insufficient VIH margin. Use SN74LVC153 or similar 3.3 V-compatible multiplexers instead.