STMicroelectronics M74HC4852YRM13TR

Overview

M74HC4852YRM13TR from STMicroelectronics is an automotive-grade dual 4:1 analog multiplexer/demultiplexer in SO-16 package, featuring injection current protection (VΔout ≤ 1 mV at VCC = 5 V, IIN = 1 mA), 150 Ω typical ON resistance at 6 V, 8.6 ns typical propagation delay, and operation from 2 V to 6 V supply. It enables robust signal routing in mixed-voltage automotive sensor interfaces where disabled channels may experience overvoltage transients.

For engineers reviewing the M74HC4852YRM13TR datasheet, M74HC4852YRM13TR pinout, M74HC4852YRM13TR application, or M74HC4852YRM13TR equivalent, key selection criteria include its AEC-Q100 qualified automotive temperature range (−40 °C to +125 °C), channel-to-channel RON matching (≤18 Ω max ΔRON at 6 V), and guaranteed injection current immunity up to ±10 mA with <5 mV output shift.

Technical Context

The M74HC4852YRM13TR implements two independent 4:1 analog switches using silicon gate C2MOS technology, each controlled by a shared 2-bit binary select (A/B) and individual INH input. Its internal injection current control circuitry clamps leakage paths during overvoltage events on inactive channels, eliminating external protection diodes.

It operates across 2–6 V with high noise immunity (VNIH/VNIL ≥ 28% VCC), supports static and dynamic analog signals up to 1.2 V peak-to-peak across the switch, and maintains latch-up immunity exceeding 500 mA per JESD17. The device is not a digital logic IC but an analog signal path component with CMOS-compatible digital control inputs.

Key Specifications

Pinout & Package

SO-16 surface-mount package (ECOPACK® compliant), 9.9 mm × 6.0 mm body, 1.27 mm pitch, 1.25 mm height. Pin 7 is NC; pins 12,14,15,11,1,5,2,4 are independent analog I/Os (X0–X3, Y0–Y3); pins 3 and 13 are common I/Os (XCOM, YCOM); pin 6 is active-low INH; pins 8 and 16 are GND and VCC respectively.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TS5A23157DCUR and ADG732BRUZ, the M74HC4852YRM13TR uniquely delivers AEC-Q100 compliance, validated injection current immunity, and dual independent 4:1 architecture in SO-16 - making it the only drop-in solution for automotive sensor multiplexing where reliability under electrical stress is mandatory.

Availability

M74HC4852YRM13TR is available at Aetrix Electronics and suitable for automotive engine control units, cabin air quality systems, and electric power steering modules requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for M74HC4852YRM13TR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, analog components, and MEMS sensors for automotive, industrial, and consumer markets.

The M74HC4852YRM13TR belongs to ST's automotive-qualified HC logic family, engineered specifically for robust analog signal routing in harsh environments where voltage transients, wide temperature swings, and long-term reliability are critical design constraints.

FAQ

Can M74HC4852YRM13TR operate with 3.3 V logic control signals while switching 5 V analog signals?

Yes. The device supports independent analog and digital voltage domains: control inputs (A, B, INH) tolerate 0–VCC logic levels, and analog I/Os handle signals from 0 V to VCC. With VCC = 5 V, 3.3 V logic signals meet VIHC (≥3.15 V) and VILC (≤1.35 V) thresholds, ensuring reliable switching without level shifters.

What is the maximum allowable voltage difference between analog inputs on disabled channels and VCC/GND?

The absolute maximum rating permits VI/O from −0.5 V to VCC + 0.5 V. However, injection current protection is characterized up to ±10 mA with RS ≤ 20 kΩ, limiting practical overvoltage to ≤20 V above GND or below VCC while maintaining VΔout ≤ 20 mV - verified per Table 8 test conditions.

Does the NC pin (Pin 7) require any PCB layout treatment?

Pin 7 is internally unconnected and must remain unbonded. ST recommends leaving it floating - no grounding or routing is required. PCB layout should avoid placing traces or copper pours beneath this pad to prevent parasitic coupling or solder bridging during reflow.

How does the device behave when INH is high and A/B select lines change state?

When INH = high, both mux sections are fully disabled regardless of A/B states: all analog paths present >10⁹ Ω off-isolation, and COM terminals enter high-impedance state. Changing A/B has no effect until INH returns low - confirmed by Truth Table (Table 3) and Figure 7 timing diagrams.