Texas Instruments SN74HC153DRG4

Overview

SN74HC153DRG4 from Texas Instruments is a dual 4-line to 1-line data selector/multiplexer in SOIC-16 package, operating from 2 V to 6 V with typical propagation delay of 17 ns at 6 V and ±6-mA output drive capability. It implements full binary decoding with independent strobe (G) inputs per channel and supports parallel-to-serial conversion in digital logic systems.

For engineers reviewing the SN74HC153DRG4 datasheet, SN74HC153DRG4 pinout, SN74HC153DRG4 application, or SN74HC153DRG4 equivalent, this page delivers verified functional modes, switching characteristics at 50 pF/150 pF loads, absolute maximum ratings, and real-world design implications for multiplexing, signal routing, and enable-controlled data path selection.

Technical Context

The SN74HC153DRG4 integrates two independent 4:1 multiplexer channels sharing common address inputs (A, B) but featuring separate strobe (G1, G2) and output (Y1, Y2) terminals. Each channel uses AND-OR logic with inverters and drivers to decode binary-select lines and route one of four data inputs (C0–C3) to its output.

Strobe logic is active-low: a high-level G forces the corresponding Y low regardless of select or data states. Propagation delay varies with supply voltage (17 ns typ. at 6 V, 21 ns typ. at 4.5 V) and load capacitance (50 pF vs. 150 pF), with output transition time ≤13 ns at 6 V.

Key Specifications

Pinout & Package

SN74HC153DRG4 is housed in a 16-pin SOIC (D) package measuring 9.90 mm × 3.90 mm with 1.27-mm lead pitch and gull-wing leads. The package is RoHS-compliant, moisture-sensitive level 1 (unlimited reflow), and rated for −40 °C to +85 °C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HC153DRG4, SN74HCT153DR offers robust TTL interfacing at the cost of higher quiescent current, while 74LV153PW delivers superior speed and efficiency in 3.3-V domains but sacrifices 2-V/6-V flexibility and SOIC packaging compatibility.

Availability

SN74HC153DRG4 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automated test equipment signal routing, embedded system bus multiplexing, and digital audio source selection requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for SN74HC153DRG4 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 expertise in high-reliability, industry-standard logic families.

The SN74HC153DRG4 belongs to TI's 74HC high-speed CMOS logic series, designed for general-purpose digital signal routing, data path selection, and interface consolidation in industrial, automotive, and consumer electronics.

FAQ

What is the maximum clock/data rate supported by SN74HC153DRG4?

The SN74HC153DRG4 does not operate on a clock; it is combinational logic. Its usable data rate depends on propagation delay and system setup/hold timing. With tpd = 17 ns (typ.) at 6 V and CL = 50 pF, it supports reliable data switching up to approximately 20 MHz in well-designed layouts with controlled trace impedance and proper bypassing. Always verify timing margins using worst-case tpd values from the datasheet.

Can SN74HC153DRG4 operate at 3.3 V?

Yes, SN74HC153DRG4 is fully specified for operation from 2 V to 6 V, including 3.3 V. At VCC = 3.3 V, VIH = 2.31 V (70% of VCC) and VIL = 0.99 V (30% of VCC) ensure compatibility with standard 3.3-V CMOS logic families. Output drive is reduced to ±4 mA, which remains sufficient for driving typical CMOS loads.

How should unused inputs be handled on SN74HC153DRG4?

All unused inputs - including A, B, G1, G2, and any unconnected C0–C3 lines - must be tied to a valid logic level (VCC or GND) to prevent floating nodes. Floating inputs cause increased ICC, erratic output behavior, and potential device damage due to partial turn-on of internal transistors. TI recommends tying unused address or strobe inputs to GND unless active-high logic is required.

Is SN74HC153DRG4 pin-compatible with SN74HC151?

No, SN74HC153DRG4 is not pin-compatible with SN74HC151. The SN74HC151 is a single 8:1 multiplexer in 16-pin package with different pin assignments (e.g., single strobe, 3-bit address, 8 data inputs). SN74HC153DRG4 provides two independent 4:1 functions with shared A/B and separate G/Y pins - layout and firmware changes are required for substitution.

Does SN74HC153DRG4 support hot insertion or live swapping?

No, SN74HC153DRG4 is not designed for hot insertion. Its absolute maximum ratings do not include powered-insertion stress conditions, and applying VCC or signals before establishing proper GND connection may exceed IIK or IOK limits. Always power-cycle the board or use dedicated hot-swap controllers when adding/removing the device in operational systems.