STMicroelectronics M74HC09RM13TR

Overview

M74HC09RM13TR from STMicroelectronics is a high-speed CMOS quad 2-input open-drain AND gate in SO-14 package, operating from 2V to 6V supply, with 7ns typical propagation delay at 6V, 1µA max quiescent current at 25°C, and high noise immunity (28% VCC min). It serves as a level-shifting logic interface in industrial control I/O expansion.

For engineers reviewing the M74HC09RM13TR datasheet, M74HC09RM13TR pinout, M74HC09RM13TR application, or M74HC09RM13TR equivalent, key selection criteria include open-drain output compatibility with mixed-voltage buses, rail-to-rail input thresholds, low static power, and guaranteed operation across –55°C to +125°C.

Technical Context

The M74HC09RM13TR implements four independent 2-input AND gates with open-drain outputs, requiring external pull-up resistors for logic HIGH assertion. Its silicon gate C2MOS process enables balanced tPLH/tPHL delays and stable output drive under capacitive loads up to 50 pF.

All inputs feature ESD protection circuits and transient voltage clamping. The device supports bidirectional level translation between 2V and 6V domains via configurable pull-up voltage, and its truth table defines Y = Z (high-impedance) when A=H,B=H - enabling wired-AND bus architectures.

Key Specifications

Pinout & Package

SO-14 (Small Outline, 150 mil width), RoHS-compliant, ECOPACK® lead-free package with 1.27 mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar open-drain AND gate applications.

Compared with SN74HC09DR and 74VHC09M, the M74HC09RM13TR uniquely supports full industrial temperature range (–55°C to +125°C) while retaining open-drain flexibility and low ICC - making it optimal for harsh-environment control nodes where reliability trumps marginal speed gains.

Availability

M74HC09RM13TR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and medical infusion pump safety interlocks requiring stable component supply over extended product lifecycles.

Supply support for M74HC09RM13TR 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 analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.

The M74HC09 belongs to ST's legacy HC logic family, engineered for interoperability with 74-series TTL/CMOS systems while delivering enhanced noise immunity, wider supply range, and lower power - targeting industrial control, instrumentation, and legacy system upgrades.

FAQ

Can M74HC09RM13TR drive an LED directly?

Yes - each open-drain output can sink up to 25mA, sufficient to drive standard 20mA LEDs with appropriate series resistor. Ensure VCC and pull-up voltage match LED forward voltage requirements, and verify total package power dissipation remains below 300mW at maximum ambient temperature.

Is a pull-up resistor required on every output?

Yes - open-drain outputs cannot source current; a pull-up resistor (typically 1kΩ–10kΩ) must be connected between each Y pin and its target logic HIGH voltage (e.g., 3.3V or 5V). Multiple outputs may share one pull-up in wired-AND configurations.

Does M74HC09RM13TR support hot insertion?

No - the device lacks hot-swap protection circuitry. Applying VCC before inputs stabilize may cause latch-up or excessive current flow. Always sequence power and signals per ST's recommended operating conditions: apply VCC first, then valid input levels.

What is the maximum capacitive load for reliable 7ns propagation delay?

The 7ns typical tPD is specified with CL = 50pF. For loads exceeding 50pF, propagation delay increases linearly - e.g., at 100pF, tPD degrades to ~13ns. Keep trace capacitance and downstream input capacitance ≤40pF for timing-critical paths requiring sub-10ns response.