Texas Instruments SN74HC153PWT

Overview

SN74HC153PWT from Texas Instruments is a dual 4-line to 1-line data selector/multiplexer in TSSOP-16 package, operating from 2 V to 6 V with typical propagation delay of 17 ns at 6 V and ±6-mA output drive at 5 V. It implements full binary decoding for channel selection, features independent strobe (G) inputs per section, and supports parallel-to-serial conversion in digital logic systems.

For engineers reviewing the SN74HC153PWT datasheet, SN74HC153PWT pinout, SN74HC153PWT application, or SN74HC153PWT equivalent, key selection criteria include its dual-channel multiplexing capability, low ICC (80 μA max), 16-pin TSSOP footprint, and compatibility with LSTTL loads in industrial control and test equipment signal routing.

Technical Context

The SN74HC153PWT integrates two independent 4:1 multiplexer sections sharing common address inputs (A, B) but with separate strobe (G1, G2) and output (Y1, Y2) terminals. Each section uses AND-OR logic with inverters and drivers for full binary decoding, enabling selection of one of four data inputs (C0–C3) per channel.

Strobe-controlled operation forces the corresponding output low when active-high, supporting cascading and enable-gated signal routing. Input transition times are specified up to 400 ns at 6 V, and outputs meet LSTTL fanout requirements (up to 15 loads) while maintaining CMOS-level input current (≤1 μA).

Key Specifications

Pinout & Package

TSSOP-16 package (5.00 mm × 4.40 mm body size, 1.2 mm max height), lead finish NIPDAU/SN, MSL Level-1, RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HCT153PW and 74LV153PW, the SN74HC153PWT offers the broadest supply range (2–6 V), highest LSTTL fanout (15 loads), and best balance of speed, power, and interoperability across legacy and modern logic families-making it ideal for industrial and test equipment where voltage flexibility and reliability are critical.

Availability

SN74HC153PWT is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, digital test equipment signal routing, and embedded system parallel-to-serial conversion requiring stable component supply and long-term manufacturability.

Supply support for SN74HC153PWT 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 specializing in analog, embedded processing, and logic ICs, with decades of heritage in industry-standard logic families including the 74HC series.

The SN74HC153PWT belongs to TI's 74HC high-speed CMOS logic product line, designed specifically for low-power, wide-supply-range digital signal routing in industrial automation, test instrumentation, and embedded control systems.

FAQ

What is the maximum operating supply voltage for SN74HC153PWT?

The SN74HC153PWT supports a maximum supply voltage of 6 V, with absolute maximum rating at 7 V. Operation beyond 6 V violates recommended conditions and risks parametric degradation or damage. The device is fully characterized from 2 V to 6 V, ensuring reliable performance across this range-including at 3.3 V and 5 V rails-making SN74HC153PWT suitable for mixed-voltage board designs where supply margins vary.

Does SN74HC153PWT support cascading of multiple devices?

Yes, SN74HC153PWT supports cascading via its independent strobe inputs (G1 and G2). By tying the output of one SN74HC153PWT section to a data input of another, and coordinating strobe and address signals, designers can implement larger multiplexing structures (e.g., 8:1 or 16:1). The datasheet explicitly confirms this capability under "Strobe (enable) line provided for cascading (N lines to n lines)", and functional mode tables verify G-controlled output forcing-enabling clean hierarchical signal routing without external logic.

What is the input capacitance of SN74HC153PWT, and how does it affect high-frequency operation?

The input capacitance (Ci) of SN74HC153PWT is 10 pF maximum across the 2–6 V supply range. This low value minimizes loading on driving sources and limits RC delay in high-speed address or strobe paths. At 6 V, with typical tpd of 17 ns and CL = 50 pF, the device maintains clean edge integrity; however, for >10 MHz address switching, keep trace lengths short and avoid stubs to prevent reflections-especially since input transition time is specified down to 400 ns at 6 V, indicating optimized internal structure for fast edges without excessive ringing.

Can SN74HC153PWT drive standard TTL loads directly?

Yes, SN74HC153PWT can drive up to 15 LSTTL loads directly, as stated in its features list and verified by output drive specifications: ±6 mA at 5 V meets LSTTL VIH/VIL thresholds and fanout requirements. Its VOH minimum is 3.98 V and VOL maximum is 0.33 V under 6 mA load at 4.5 V, satisfying TTL logic '1' and '0' voltage margins. No external buffer is needed when interfacing with 74LS or 74F series devices, making SN74HC153PWT ideal for upgrading legacy TTL systems with CMOS efficiency.

Is SN74HC153PWT pin-compatible with other package variants of the same part number?

Yes, SN74HC153PWT shares identical pinout and function with all 16-pin SN74HC153 variants-including SOIC (D), PDIP (N), SOP (NS), and CFP (W)-as confirmed by TI's Pin Configuration and Functions section, which states "Pin numbers are for the D, J, N, NS, PW, and W packages." All share the same signal mapping, thermal pad absence (TSSOP has no exposed pad), and mechanical pin spacing (0.65 mm pitch for PW), enabling drop-in replacement across packages when board layout permits.