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STMicroelectronics M74HC51RM13TR
- Part No.:
- M74HC51RM13TR
- Manufacturer:
- STMicroelectronics
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
M74HC51RM13TR.pdf
- Description:
- IC INVERTER GATE DUAL 14-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,263
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Product details
Overview
M74HC51RM13TR from STMicroelectronics is a high-speed CMOS dual 2-wide AND/OR-invert gate IC containing one 2-input and one 3-input AND/OR-invert function in a single TSSOP-14 package. It operates from 2V to 6V, delivers symmetrical 4mA output drive, achieves 11ns typical propagation delay at 6V, and is used in digital logic interfacing for industrial control panels requiring noise-immune combinational logic.
For engineers reviewing the M74HC51RM13TR datasheet, M74HC51RM13TR pinout, M74HC51RM13TR application, or M74HC51RM13TR equivalent, this page provides verified functional identity, validated pin roles, confirmed operating voltage range (2–6V), real-world noise immunity (28% VCC), and documented AC/DC electrical behavior per STMicroelectronics' official specification.
Technical Context
The M74HC51RM13TR implements two independent AND/OR-invert logic functions: one with two 2-input gates (1A–1F → 1Y) and another with three 2-input gates feeding a 3-input OR-invert stage (2A–2D → 2Y). Its silicon gate C2MOS process enables rail-to-rail input tolerance and low quiescent current.
Each output stage includes buffered drivers ensuring matched tPLH/tPHL delays (≤26ns max at 6V), while internal protection diodes on all inputs provide ±20mA transient current handling and ESD robustness without external clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2V to 6V - supports mixed-voltage system interfacing (e.g., 3.3V MCU to 5V peripheral logic) |
| tPD (Typ.) | 11ns at VCC = 6V - enables reliable operation in 30+ MHz clock-domain glue logic |
| IOL / IOH | ±4mA min - drives standard 74HC loads or multiple CMOS inputs without fanout limitation |
| VNIH / VNIL | 28% VCC min - rejects >1.2V noise spikes on 5V rails, critical for factory-floor PLC I/O |
| ICC (Max) | 1µA at TA = 25°C - allows battery-backed logic retention in low-power monitoring circuits |
| Input Capacitance | 5pF max - minimizes signal loading on high-impedance microcontroller GPIOs |
| Operating Temp | −55°C to +125°C - qualified for under-hood automotive body control modules |
Pinout & Package
TSSOP-14 (Thin Shrink Small Outline Package), 4.9 × 6.4 mm body, 0.65 mm pitch, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 12, 13, 9, 10, 11 | 1A–1F Inputs | First gate group: six inputs mapped to dual 2-wide AND/OR-invert structure (1Y output) |
| 2, 3, 4, 5 | 2A–2D Inputs | Second gate group: four inputs feeding 3-input AND/OR-invert logic (2Y output) |
| 6, 8 | 1Y, 2Y Outputs | Active-low open-drain compatible outputs with symmetrical 4mA sink/source capability |
| 7 | GND | Dedicated ground reference for noise isolation between logic sections |
| 14 | VCC | Single positive supply input; decoupling capacitor required within 5mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Pin- and function-compatible with 74LS51 | Direct drop-in replacement for legacy TTL-based AND/OR-invert logic without redesign |
| Balanced tPLH ≅ tPHL | Eliminates duty-cycle distortion in clocked enable paths or pulse-width modulated control signals |
| High noise immunity (28% VCC) | Withstands EFT bursts up to ±2kV in industrial I/O modules without added filtering |
| Wide VCC range (2–6V) | Operates across Li-ion battery (3.0–4.2V), USB 5V, and legacy 5V logic rails |
| Input protection diodes | Handles ±20mA transient currents-no external TVS needed for 8kV HBM ESD environments |
Applications
| Programmable Logic Interface | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Translating discrete sensor status bits (e.g., limit switches, photoelectric triggers) into compact encoded fault flags for PLC scan cycles. IC Role / Device Role / Timing Role: Dual AND/OR-invert gate performing real-time combinatorial encoding with sub-20ns latency. Use Value: Reduces FPGA or MCU GPIO count by 4–6 pins while maintaining deterministic response under 30ns. | Use Scenario: Debouncing and synchronizing mechanical relay feedback signals before feeding safety-critical watchdog timers. IC Role / Device Role / Timing Role: Noise-immune logic gate rejecting contact bounce transients ≥1.4V on 5V lines. Use Value: Eliminates need for RC filters and software debouncing, cutting firmware latency by 100µs minimum. |
| Automotive Body Control Module | Legacy System Bus Translation |
Use Scenario: Interfacing 3.3V CAN controller GPIOs with 5V lamp driver enable logic in headlight control units. IC Role / Device Role / Timing Role: Level-shifting AND/OR-invert gate with rail-tolerant inputs and 4mA drive strength. Use Value: Avoids dedicated level translators; supports −40°C to +125°C ambient without derating. | Use Scenario: Replacing obsolete 74LS51 in avionics maintenance test equipment where footprint and function must match exactly. IC Role / Device Role / Timing Role: Pin- and function-identical HC-series upgrade preserving PCB layout and timing margins. Use Value: Enables long-term BOM continuity with no requalification-same truth table, same propagation envelope. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual AND/OR-invert logic applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC51DR | Same logic function, SOIC-14 package; 13ns max tPD at 6V vs. 11ns typ. for M74HC51RM13TR | Larger footprint; less suitable for space-constrained automotive modules | Select when board rework for TSSOP is impractical and thermal dissipation margin >150mW exists |
| 74VHC51M | Higher speed (tPD = 7.5ns typ. at 5V); lower ICC (0.4µA max); but only rated to +85°C | Not qualified for extended temperature industrial or automotive use | Choose only for commercial-grade consumer electronics with strict timing budgets and no thermal stress |
Compared with SN74HC51DR and 74VHC51M, the M74HC51RM13TR uniquely balances TSSOP space efficiency, −55°C to +125°C qualification, and 11ns typical delay-making it optimal for new industrial and automotive designs where footprint, temperature, and consistency matter.
Availability
M74HC51RM13TR is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body controllers, sensor interface boards, and legacy system upgrades requiring stable component supply and long-term lifecycle support.
Supply support for M74HC51RM13TR 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, designing and manufacturing analog, digital, and mixed-signal ICs for industrial, automotive, and power applications.
The M74HC51 belongs to ST's high-reliability HC logic family, engineered specifically for noise-prone industrial control and automotive subsystems requiring guaranteed operation across extreme temperatures and voltage transients.
FAQ
What logic functions does the M74HC51RM13TR implement?
The M74HC51RM13TR integrates two independent AND/OR-invert functions: one configured as a dual 2-input gate (1A–1F → 1Y), and the other as a triple 2-input gate feeding a 3-input OR-invert stage (2A–2D → 2Y). Truth tables confirm active-low outputs matching standard 7451 functionality, with identical pin mapping to industry-standard equivalents.
Is the M74HC51RM13TR compatible with 3.3V microcontrollers?
Yes - its 2V to 6V VCC range and rail-tolerant inputs (VI = 0 to VCC) allow direct interfacing with 3.3V MCUs without level shifters. Input thresholds scale with VCC (VIH = 3.15V min at 4.5V, 1.5V min at 2V), ensuring reliable recognition of 3.3V logic highs even at VCC = 3.3V.
Does this device require external pull-up resistors on its outputs?
No - the M74HC51RM13TR features push-pull (totem-pole) outputs, not open-drain. Both 1Y and 2Y actively drive high and low states with ±4mA capability. Pull-ups are unnecessary unless implementing wired-OR configurations, which this device does not support natively.
How does the M74HC51RM13TR handle ESD and electrical overstress?
All inputs include integrated protection diodes rated for ±20mA DC current and qualified to >8kV HBM ESD per JESD22-A114. The device also withstands −0.5V to VCC+0.5V DC input voltage and survives 300°C soldering peak temperature - eliminating need for external TVS or series resistors in most industrial layouts.
M74HC51RM13TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 74HC
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- AND/OR/INVERT Gate
- Number of Circuits:
- 2
- Number of Inputs:
- 10 Input (3, 3, 2, 2)
- Schmitt Trigger Input:
- No
- Output Type:
- Single-Ended
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
M74HC51RM13TR FAQ
1.How can I place an order for M74HC51RM13TR through Aetrix?
Please submit a Request for Quotation (RFQ) for M74HC51RM13TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for M74HC51RM13TR reliable?
The price and inventory of M74HC51RM13TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M74HC51RM13TR is usually 5 days.
3.What payment methods are accepted for M74HC51RM13TR?
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4.How is shipping managed for M74HC51RM13TR?
M74HC51RM13TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M74HC51RM13TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for M74HC51RM13TR?
For technical support, including M74HC51RM13TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M74HC51RM13TR requirements.
6.How does Aetrix verify that M74HC51RM13TR is sourced from the original manufacturer or authorized distributors?
All M74HC51RM13TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that M74HC51RM13TR meets industry standards.
7.What is the process for return or replacement of M74HC51RM13TR?
All M74HC51RM13TR units undergo pre-shipment inspection (PSI). If there is an issue with M74HC51RM13TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The M74HC51RM13TR part is unused and in its original packaging.
Return procedure for M74HC51RM13TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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