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STMicroelectronics M74HC4049RM13TR
- Part No.:
- M74HC4049RM13TR
- Manufacturer:
- STMicroelectronics
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
M74HC4049RM13TR.pdf
- Description:
- IC BUFFER INVERT 6V 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,359
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Product details
Overview
M74HC4049RM13TR from STMicroelectronics is a high-speed CMOS hex inverting buffer/converter with 6 independent channels, operating from 2V to 6V supply, featuring 8ns typical propagation delay at 6V, ±5.2mA output drive, and input tolerance up to 13V for level-shifting applications in industrial control interfaces.
For engineers reviewing the M74HC4049RM13TR datasheet, M74HC4049RM13TR pinout, M74HC4049RM13TR application, or M74HC4049RM13TR equivalent, key selection criteria include its 13V-tolerant inputs, symmetrical 6mA output drive, wide temperature range (−55°C to +125°C), TSSOP-16 package footprint, and compatibility with legacy 74-series logic systems.
Technical Context
The device implements six independent two-stage CMOS inverters using silicon gate C2MOS technology, enabling high noise immunity (VIH/VIL = 28% VCC min) and balanced tPLH/tPHL delays. Input protection includes dedicated VCC-side diodes rated for 13V DC, allowing safe interfacing between higher-voltage logic domains and 3.3V/5V systems.
It operates across −55°C to +125°C with guaranteed DC performance at VCC = 2–6V, supports CL = 50pF AC loads, and maintains stable VOH/VOL under IO = ±4mA (4.5V) and ±5.2mA (6V) conditions without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2V to 6V - Enables direct use in 3.3V and 5V systems without level shifters |
| tPD (Typ) | 8ns at VCC = 6V - Supports >100MHz clock distribution in non-critical timing paths |
| IOH/IOL | ±5.2mA at VCC = 6V - Drives standard TTL loads and multiple 74HC inputs |
| VI (Max) | 13V - Allows direct connection to 12V logic or sensor outputs without clamping resistors |
| ICC (Max) | 20µA at TA = −55°C to +125°C - Suitable for low-power always-on monitoring circuits |
| VIH/VIL | 4.2V / 1.8V at VCC = 6V - Provides 28% noise margin, robust against supply ripple |
| Operating Temp | −55°C to +125°C - Qualified for under-hood automotive and industrial motor control environments |
Pinout & Package
TSSOP-16 package: 4.9 × 6.4 mm body, 0.65 mm pitch, 1.2 mm max height, exposed pad not present, JEDEC MO-153 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Positive supply rail - Must be decoupled locally with 100nF ceramic capacitor |
| 2,4,6,10,12,15 | 1Y–6Y | Inverted outputs - Each drives one load independently; no internal bus contention |
| 3,5,7,9,11,14 | 1A–6A | Non-inverting inputs - Accept 0–13V signals; internal clamping diodes active above VCC |
| 8 | GND | Reference ground - Shared return path for all six channels |
| 13,16 | NC | No internal connection - Must remain unconnected; no pull-up/down required |
Key Features
| Feature | Design Value |
|---|---|
| 13V-tolerant inputs | Enables direct interface with 12V industrial sensors or legacy microcontroller I/O without external resistors or translators |
| Symmetrical output drive | |IOH| = IOL ≥ 6mA ensures matched rise/fall times and reduced signal distortion on shared buses |
| Wide temperature operation | Guaranteed functionality from −55°C to +125°C supports deployment in engine control units and power inverters |
| Low quiescent current | ICC ≤ 20µA over full temp range allows use in battery-backed status monitoring circuits |
| 74-series pin/function compatibility | Direct drop-in replacement for obsolete 74LS4049 or 74HC4049 in existing PCB layouts |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
Use Scenario: Isolating and inverting 12V sensor switch signals before feeding into a 5V microcontroller GPIO. IC Role / Device Role / Timing Role: Level-shifting inverting buffer - converts 12V logic to 5V-compatible inverted logic while providing noise immunity. Use Value: Eliminates need for discrete resistor-divider networks and Schottky clamps, reducing BOM count and board area by 3 components per channel. | Use Scenario: Driving LED indicators and relay coils from a 3.3V MCU in a vehicle door module with 12V battery supply present. IC Role / Device Role / Timing Role: Voltage-tolerant inverting driver - accepts 3.3V control signals and delivers clean 5V/12V-compatible outputs via external pull-ups. Use Value: Prevents MCU I/O damage during load dump transients (up to 13V), improving system reliability without added TVS protection per line. |
| Legacy System Logic Interface | Programmable Power Sequencer |
Use Scenario: Interfacing modern 3.3V FPGA I/O banks with legacy 5V TTL peripherals requiring inverted handshake signals. IC Role / Device Role / Timing Role: Bidirectional voltage-adapting inverter - leverages 13V-tolerant inputs to accept 5V signals and outputs clean 3.3V logic levels. Use Value: Avoids timing skew introduced by external level translators; tPD = 8ns ensures sub-10ns signal alignment across all six channels. | Use Scenario: Generating precisely timed, inverted enable signals for multiple DC-DC converters in a multi-rail power supply. IC Role / Device Role / Timing Role: Synchronized inverting delay element - six independent channels provide deterministic inversion with matched tPLH/tPHL for staggered startup sequencing. Use Value: Ensures <1ns inter-channel skew between enable signals, meeting tight sequencing windows (<100ns) required by high-performance SoCs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC4049PWR | Same logic function and 13V-tolerant inputs; slightly higher ICC (max 40µA) and wider tPD range (12ns max at 6V) | Qualified only to −40°C to +85°C; lacks extended temperature grade | Select when cost sensitivity outweighs extended temp requirement and industrial qualification is not mandated |
| 74LVC4049PW | Lower VCC range (1.65–5.5V); no 13V input tolerance; higher speed (tPD = 5.2ns typ at 3.3V) | Not suitable for 12V interface; requires external clamping for mixed-voltage systems | Prefer for pure 3.3V systems where speed is critical and voltage translation is handled elsewhere |
Compared with SN74HC4049PWR and 74LVC4049PW, M74HC4049RM13TR uniquely combines extended temperature support (−55°C to +125°C), 13V input tolerance, and TSSOP-16 packaging-making it the only option qualified for under-hood automotive and high-reliability industrial control without design rework.
Availability
M74HC4049RM13TR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, legacy system logic interface, and programmable power sequencers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for M74HC4049RM13TR 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 automotive, industrial, and consumer markets.
M74HC4049 belongs to the high-speed CMOS logic family optimized for robust level translation, noise-immune buffering, and drop-in compatibility with legacy 74-series designs in harsh-environment applications.
FAQ
Can M74HC4049RM13TR safely interface a 12V sensor output with a 3.3V microcontroller?
Yes. Its inputs tolerate up to 13V DC regardless of VCC level, allowing direct connection of 12V sensor signals to pins 3,5,7,9,11,14. With VCC = 3.3V, it outputs clean 0V/3.3V inverted logic compatible with 3.3V MCU inputs, eliminating external resistive dividers or clamping diodes.
What is the maximum capacitive load this device can drive reliably?
The device is characterized for CL = 50pF with guaranteed tPLH/tPHL and output voltage specs. It can drive heavier loads (e.g., 100pF) with increased propagation delay (up to 150ns at 2V), but output voltage margins and transition times degrade beyond 50pF - use local buffering for >100pF nets.
Are pins 13 and 16 internally connected or should they be left floating?
Pins 13 and 16 are explicitly marked "NC" (Not Connected) in the official ST datasheet and have no internal bond wires. They must remain unconnected - neither tied to VCC nor GND - and no external components should attach to them to avoid mechanical stress or unintended coupling.
Does this part support hot insertion or live circuit connection?
No. The device lacks hot-swap protection features such as power-up reset, I²C-style slew-rate control, or back-drive immunity. Connecting VCC or inputs while other supplies are active may cause latch-up or excessive current due to internal parasitic paths - always power VCC before applying input signals.
M74HC4049RM13TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 74HC
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 6
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- Push-Pull
- 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:
- 16-SO
M74HC4049RM13TR FAQ
1.How can I place an order for M74HC4049RM13TR through Aetrix?
Please submit a Request for Quotation (RFQ) for M74HC4049RM13TR 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 M74HC4049RM13TR reliable?
The price and inventory of M74HC4049RM13TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M74HC4049RM13TR is usually 5 days.
3.What payment methods are accepted for M74HC4049RM13TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M74HC4049RM13TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M74HC4049RM13TR?
M74HC4049RM13TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M74HC4049RM13TR 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 M74HC4049RM13TR?
For technical support, including M74HC4049RM13TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M74HC4049RM13TR requirements.
6.How does Aetrix verify that M74HC4049RM13TR is sourced from the original manufacturer or authorized distributors?
All M74HC4049RM13TR 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 M74HC4049RM13TR meets industry standards.
7.What is the process for return or replacement of M74HC4049RM13TR?
All M74HC4049RM13TR units undergo pre-shipment inspection (PSI). If there is an issue with M74HC4049RM13TR, 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 M74HC4049RM13TR part is unused and in its original packaging.
Return procedure for M74HC4049RM13TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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