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STMicroelectronics M74HCT132TTR
- Part No.:
- M74HCT132TTR
- Manufacturer:
- STMicroelectronics
- Category:
- Gates and Inverters
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
M74HCT132TTR.pdf
- Description:
- IC GATE NAND 4CH 2-INP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,412
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Product details
Overview
M74HCT132TTR from STMicroelectronics is a high-speed CMOS quad 2-input Schmitt NAND gate with hysteresis, designed for noise-immune digital signal conditioning in TTL/NMOS interfacing applications. It delivers tPD = 19 ns (typ.) at VCC = 4.5 V, VIH/VIL thresholds of 1.55 V/0.85 V (typ.), and symmetrical 4 mA output drive capability. Used in clock shaping, debouncing, and slow-edge signal cleanup in industrial control and sensor interface circuits.
For engineers reviewing the M74HCT132TTR datasheet, M74HCT132TTR pinout, M74HCT132TTR application, or M74HCT132TTR equivalent, key selection factors include its 0.7 V typical hysteresis voltage, 1 µA max ICC at 25°C, balanced tPLH/tPHL propagation delays, and TSSOP-14 package compatibility with space-constrained PCB layouts.
Technical Context
The M74HCT132TTR implements four independent Schmitt-trigger NAND gates using silicon gate C2MOS technology, enabling clean logic-level translation of slowly varying analog-like inputs into sharp digital outputs. Its input hysteresis (~0.7 V at VCC = 4.5 V) ensures robust immunity to noise and contact bounce without external RC networks.
It operates across VCC = 4.5–5.5 V and full industrial temperature range (−55°C to +125°C), with TTL-compatible input thresholds and CMOS-level output swing. All inputs feature ESD protection diodes rated for ±20 mA transient current, supporting direct interface with legacy TTL and NMOS logic families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| tPD | 19 ns typical propagation delay at VCC = 4.5 V - enables reliable operation in 25 MHz+ digital timing paths |
| VH (Hysteresis) | 0.7 V typical at VCC = 4.5 V - provides 20% VCC hysteresis for stable switching on noisy or slow-rising signals |
| IOH/IOL | ±4 mA minimum output drive - supports fan-out of ≥10 LS-TTL loads with rail-to-rail logic swing |
| ICC (Quiescent) | 1 µA maximum at TA = 25°C - enables ultra-low static power in battery-backed or always-on monitoring circuits |
| VIN Thresholds | VIH = 1.55 V, VIL = 0.85 V (typ. at VCC = 4.5 V) - ensures guaranteed TTL-level compatibility without level shifters |
| CIN | 10 pF typical input capacitance - minimizes loading on upstream drivers and preserves signal edge integrity |
Pinout & Package
TSSOP-14 package: 4.9 × 6.4 mm body, 0.65 mm pitch, 14-pin surface-mount with exposed pad not present; RoHS-compliant, moisture sensitivity level MSL3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9, 12 | Input A (Gate 1–4) | First input per NAND gate; Schmitt-triggered for noise rejection |
| 2, 5, 10, 13 | Input B (Gate 1–4) | Second input per NAND gate; identical hysteresis and threshold behavior |
| 3, 6, 8, 11 | Output Y (Gate 1–4) | Active-low NAND output; capable of sourcing/sinking ≥4 mA |
| 7 | GND | Digital ground reference; must be low-impedance connection for noise immunity |
| 14 | VCC | Positive supply (4.5–5.5 V); decoupling capacitor required within 1 cm |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | 0.7 V typical hysteresis enables reliable switching on slow or noisy signals without external components |
| TTL-compatible thresholds | VIH = 1.55 V / VIL = 0.85 V (typ. at 4.5 V) ensures direct interoperation with 74LS and 74F families |
| Balanced propagation delays | tPLH ≅ tPHL ensures minimal duty-cycle distortion in clock-shaping applications |
| ESD-protected inputs | ±20 mA DC input diode current rating protects against static discharge and transient overvoltage events |
Applications
| Pushbutton Debouncing | Waveform Shaping |
|---|---|
Use Scenario: Mechanical switch closure in industrial HMI panels generates multi-millisecond bounce. IC Role / Device Role / Timing Role: Schmitt NAND gate acts as hardware debouncer by rejecting sub-hysteresis transitions. Use Value: Eliminates need for microcontroller polling or RC+software filters; reduces firmware complexity and latency. | Use Scenario: Sine wave oscillator output fed to digital logic requires clean square-wave conversion. IC Role / Device Role / Timing Role: Input hysteresis converts slow zero-crossings into jitter-free logic edges. Use Value: Enables precise clock distribution without phase ambiguity or metastability in timing-critical systems. |
| Sensor Signal Conditioning | TTL-to-CMOS Interface |
Use Scenario: Analog output from temperature or proximity sensor exhibits slow ramping and EMI coupling. IC Role / Device Role / Timing Role: Acts as threshold comparator with built-in noise margin before ADC or MCU sampling. Use Value: Prevents false triggers from line noise; improves system reliability in electrically harsh environments. | Use Scenario: Legacy 74LS244 bus driver feeds signals to modern 3.3 V or 5 V CMOS microcontrollers. IC Role / Device Role / Timing Role: Level translator and noise filter between mixed-voltage logic domains. Use Value: Ensures valid logic levels and eliminates glitches caused by undershoot/overshoot on shared buses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schmitt NAND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCT132DR | Same logic function and electrical specs; SOIC-14 package (3.9 × 4.9 mm), higher thermal resistance | Preferred for through-hole prototyping or larger board real estate; less suitable for high-density routing | Select when manual soldering or legacy footprint compatibility is required |
| 74VHC132M | Higher VCC range (2–5.5 V); lower ICC (0.1 µA typ.), but reduced output drive (±8 mA) and no guaranteed −55°C operation | Better for wide-supply or ultra-low-power battery systems; not qualified for extended industrial temp range | Select only if operating below 4.5 V or requiring sub-µA quiescent current at cold temperatures |
Compared with SN74HCT132DR and 74VHC132M, the M74HCT132TTR uniquely combines TSSOP-14 compactness, full −55°C to +125°C qualification, and guaranteed 4 mA drive at 4.5 V - making it optimal for miniaturized industrial controllers and automotive-adjacent sensor modules.
Availability
M74HCT132TTR is available at Aetrix Electronics and suitable for pushbutton debouncing, waveform shaping, and sensor signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for M74HCT132TTR 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 microcontrollers, power ICs, sensors, and discrete components for industrial, automotive, and consumer markets.
The M74HCT132TTR belongs to the HCT logic family, engineered specifically for TTL-compatible, high-noise-immunity digital interfacing in harsh environments - emphasizing robustness, low power, and seamless legacy integration.
FAQ
What is the minimum recommended VCC for reliable Schmitt-trigger operation?
The M74HCT132TTR is specified for VCC = 4.5–5.5 V. Below 4.5 V, hysteresis voltage drops below 0.4 V (min), and input thresholds shift outside TTL-compatible ranges. Operation at 4.3 V may yield marginal noise immunity and is not guaranteed per datasheet limits.
Can M74HCT132TTR drive an LED directly?
No. While its 4 mA output sink/source capability meets logic fan-out requirements, it cannot safely drive standard LEDs (typically requiring 5–20 mA). Direct LED connection risks exceeding VOL/VOL limits and degrading noise margins; use a series transistor or dedicated LED driver instead.
Is the TSSOP-14 package lead-free and RoHS-compliant?
Yes. The M74HCT132TTR uses matte tin (Sn) lead finish and complies with EU RoHS Directive 2011/65/EU and REACH SVHC regulations. Its MSL3 rating requires bake-before-reflow if exposed to ambient >30°C/60% RH for >168 hours.
Does this device support hot-swap or live-insertion?
No. The M74HCT132TTR lacks hot-swap protection circuitry such as power-up sequencing control or I/O clamp diodes rated for back-drive conditions. Applying VCC after signal inputs may forward-bias internal protection diodes and cause latch-up or excessive current draw.
M74HCT132TTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 74HCT
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- NAND Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- Schmitt Trigger
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 1 µA
- Current - Output High, Low:
- 4mA, 4mA
- Input Logic Level - Low:
- 0.5V ~ 0.6V
- Input Logic Level - High:
- 1.9V ~ 2.1V
- Max Propagation Delay @ V, Max CL:
- 30ns @ 4.5V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
M74HCT132TTR FAQ
1.How can I place an order for M74HCT132TTR through Aetrix?
Please submit a Request for Quotation (RFQ) for M74HCT132TTR 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 M74HCT132TTR reliable?
The price and inventory of M74HCT132TTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M74HCT132TTR is usually 5 days.
3.What payment methods are accepted for M74HCT132TTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M74HCT132TTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M74HCT132TTR?
M74HCT132TTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M74HCT132TTR 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 M74HCT132TTR?
For technical support, including M74HCT132TTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M74HCT132TTR requirements.
6.How does Aetrix verify that M74HCT132TTR is sourced from the original manufacturer or authorized distributors?
All M74HCT132TTR 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 M74HCT132TTR meets industry standards.
7.What is the process for return or replacement of M74HCT132TTR?
All M74HCT132TTR units undergo pre-shipment inspection (PSI). If there is an issue with M74HCT132TTR, 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 M74HCT132TTR part is unused and in its original packaging.
Return procedure for M74HCT132TTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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