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onsemi MC74AC132DR2
- Part No.:
- MC74AC132DR2
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC74AC132DR2.pdf
- Description:
- IC GATE NAND 4CH 2-INP 14-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
MC74AC132DR2 from onsemi is a quad 2-input NAND Schmitt trigger IC in SOIC-14 package, designed for noise-immune signal conditioning in digital logic interfaces. It operates from 2.0 V to 6.0 V, delivers ±24 mA output drive, exhibits 1.2 V typical hysteresis at 4.5 V, and achieves 9.0 ns propagation delay (tPLH/tPHL) at 5.0 V with 50 pF load - enabling reliable debouncing of mechanical switches in industrial control panels.
For engineers reviewing the MC74AC132DR2 datasheet, pinout, applications, or equivalent options, key selection criteria include Schmitt-trigger input thresholds (Vt+ = 3.2 V / Vt− = 0.9 V at 4.5 V), CMOS-level compatibility, SOIC-14 thermal resistance (116 °C/W), and guaranteed operation across −40°C to +85°C ambient.
Technical Context
The MC74AC132DR2 implements four independent 2-input NAND gates, each incorporating a Schmitt-trigger input stage using positive feedback to generate input hysteresis. This architecture enables clean output transitions from slow-rising or noisy inputs without oscillation.
It uses high-performance silicon-gate CMOS technology, supporting rail-to-rail input voltage range (0 to VCC) and delivering TTL-compatible output levels when VCC = 5.0 V. Input thresholds are internally set by resistor ratios, making them stable over temperature and supply voltage variation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - supports mixed-voltage system interfacing and battery-powered logic. |
| Output Drive Current | ±24 mA - sufficient to directly drive LEDs, small relays, or multiple 74AC/ACT inputs without buffering. |
| Propagation Delay | 9.0 ns max at 5.0 V, CL = 50 pF - enables use in sub-100 MHz clocked logic paths with timing margin. |
| Hysteresis (Vh) | 1.2 V typ at 4.5 V - provides robust noise immunity against EMI-induced glitches on long PCB traces. |
| Input Thresholds | Vt+ = 3.2 V, Vt− = 0.9 V at 4.5 V - defines 2.3 V switching window for reliable edge detection in noisy environments. |
| Quiescent ICC | 40 µA max at 5.5 V - ensures low static power in always-on monitoring circuits. |
| ESD Rating | >2000 V HBM - meets industrial IEC 61000-4-2 level for handling and board assembly. |
Pinout & Package
MC74AC132DR2 is housed in a Pb-free SOIC-14 (Case 751A) surface-mount package measuring 8.75 mm × 4.00 mm × 1.75 mm, with 1.27 mm pitch and gull-wing leads. Thermal resistance θJA is 116 °C/W in still air.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 12, 13 | NAND Input (A/B per gate) | Dual Schmitt-trigger inputs per gate - accept slow edges and reject noise below hysteresis window. |
| 3, 6, 10, 11 | NAND Output (Y per gate) | CMOS push-pull outputs - source/sink up to 24 mA, compatible with 74AC/ACT/LS loads. |
| 7 | GND | Ground reference for all logic and power domains - must be low-impedance for stable hysteresis. |
| 14 | VCC | Positive supply pin - decoupling capacitor (0.1 µF) required within 5 mm for AC noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt Trigger Inputs | Guaranteed hysteresis ≥0.4 V across full temperature and voltage range - eliminates contact bounce artifacts in switch interfaces. |
| High Output Drive | ±24 mA per output - allows direct driving of 10+ 74AC inputs or LED indicators without external transistors. |
| Wide Supply Range | 2.0–6.0 V operation - enables interoperability between 3.3 V microcontrollers and 5.0 V legacy peripherals. |
| Pb-Free SOIC-14 | RoHS-compliant, moisture sensitivity level 1 - supports standard reflow profiles without baking requirements. |
| Industrial Temp Range | −40°C to +85°C operation - qualified for deployment in factory automation, HVAC controls, and outdoor instrumentation. |
Applications
| Switch Debouncing | Waveform Shaping |
|---|---|
|
Use Scenario: Mechanical pushbuttons or rotary encoders generate multi-millisecond contact bounce in industrial HMI panels. IC Role / Device Role / Timing Role: MC74AC132DR2 acts as a hardware debouncer - its Schmitt inputs convert noisy switch closures into clean, single-edge logic pulses. Use Value: Eliminates need for firmware polling or RC+software filters, reducing MCU interrupt load and improving real-time response. |
Use Scenario: Analog sensor outputs (e.g., thermistor-based comparators) produce slow-rising signals susceptible to noise-induced jitter. IC Role / Device Role / Timing Role: MC74AC132DR2 serves as a waveform conditioner - reshaping analog-derived logic edges into sharp, deterministic transitions. Use Value: Prevents metastability in downstream synchronous logic and ensures accurate edge-triggered sampling in data acquisition systems. |
| Noise-Immune Clock Buffering | Digital Signal Regeneration |
|
Use Scenario: Long PCB traces carry clock signals from microcontroller to peripheral ICs, picking up crosstalk and ground bounce. IC Role / Device Role / Timing Role: MC74AC132DR2 functions as a Schmitt-triggered clock repeater - restoring edge integrity before distribution. Use Value: Maintains setup/hold margins for synchronous peripherals (e.g., ADCs, DACs) despite trace-induced rise/fall time degradation. |
Use Scenario: Legacy TTL or open-collector bus signals degrade over distance or due to capacitive loading in test equipment backplanes. IC Role / Device Role / Timing Role: MC74AC132DR2 operates as a signal regenerator - converting marginal logic levels into full-swing CMOS outputs. Use Value: Restores noise margin and fanout capability, extending reliable communication range without protocol translation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schmitt-trigger NAND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LV132APWR | Lower supply range (2.0–5.5 V); 8 mA output drive; 12 ns max tPD at 3.3 V. | Better suited for 3.3 V-only systems; insufficient drive for direct LED/relay loads. | Select when power efficiency and 3.3 V compatibility outweigh drive strength requirements. |
| 74HC132D,653 | Higher propagation delay (21 ns max at 4.5 V); 5.2 mA output drive; identical SOIC-14 footprint. | Limited fanout and slower edge rates - unsuitable for high-speed signal regeneration. | Choose only for cost-sensitive, low-frequency (<1 MHz) debouncing where timing margin is ample. |
Compared with SN74LV132APWR and 74HC132D,653, the MC74AC132DR2 uniquely balances wide voltage operation (2–6 V), high output drive (±24 mA), and fast propagation (9 ns), making it optimal for mixed-voltage industrial signal conditioning where both noise immunity and timing performance are critical.
Availability
MC74AC132DR2 is available at Aetrix Electronics and suitable for industrial control panels, sensor interface modules, and embedded HMI systems requiring stable component supply and long-term manufacturability.
Supply support for MC74AC132DR2 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient, high-reliability components for automotive, industrial, and cloud infrastructure applications.
The MC74AC132DR2 belongs to the 74AC logic family - engineered for high-speed, low-power CMOS operation with enhanced noise immunity, targeting robust digital interfacing in harsh electrical environments.
FAQ
What is the maximum operating supply voltage for the MC74AC132DR2?
The MC74AC132DR2 supports a DC supply voltage range of 0.5 V to +6.5 V, but its recommended operating range is 2.0 V to 6.0 V. Operation above 6.0 V is not guaranteed and may risk reliability; the absolute maximum rating of +6.5 V applies only to non-operational stress conditions per the datasheet's Maximum Ratings table.
Does the MC74AC132DR2 have TTL-compatible inputs?
No, the MC74AC132DR2 does not have TTL-compatible inputs. That feature is exclusive to the MC74ACT132 variant. The MC74AC132DR2 uses standard CMOS input thresholds (Vt+ ≈ 3.2 V at 4.5 V), whereas TTL-compatible inputs require lower VIH (≥2.0 V) and higher IIL sink current - specified only for the ′ACT version.
Can the MC74AC132DR2 drive an LED directly?
Yes, the MC74AC132DR2 can drive a standard 2 mA LED directly: its output sink current rating is 24 mA, well above typical LED forward currents. For a 5 V supply and red LED (VF ≈ 1.8 V), a 150 Ω series resistor limits current to ~21 mA - within safe operating limits and verified in the DC Characteristics table under IOL = 24 mA.
What is the hysteresis voltage of the MC74AC132DR2 at 5.5 V supply?
At VCC = 5.5 V, the MC74AC132DR2 guarantees a minimum hysteresis (Vh) of 0.5 V and a maximum of 1.6 V, with a typical value of 1.6 V. This is derived from the Input Characteristics table: Vt+ = 3.9 V and Vt− = 1.1 V, yielding Vh = Vt+ − Vt− = 2.8 V typical - but the datasheet explicitly lists Vh(max) = 1.6 V and Vh(min) = 0.5 V at 5.5 V, confirming process-limited bounds.
Is the MC74AC132DR2 pin-compatible with the MC74ACT132DR2?
Yes, the MC74AC132DR2 is pin-compatible with the MC74ACT132DR2: both are quad 2-input NAND Schmitt triggers in identical SOIC-14 packages with matching pinout (GND at Pin 7, VCC at Pin 14, and identical gate input/output assignments). However, they differ electrically - the ′ACT version has TTL-compatible inputs and tighter propagation delay specs at 5 V, while the ′AC version offers wider voltage range and higher noise immunity.
MC74AC132DR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74AC
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- NAND Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- Schmitt Trigger
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Max):
- 4 µA
- Current - Output High, Low:
- 24mA, 24mA
- Input Logic Level - Low:
- 0.5V ~ 1.1V
- Input Logic Level - High:
- 2.2V ~ 3.9V
- Max Propagation Delay @ V, Max CL:
- 9ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MC74AC132DR2 FAQ
1.How can I place an order for MC74AC132DR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74AC132DR2 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 MC74AC132DR2 reliable?
The price and inventory of MC74AC132DR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74AC132DR2 is usually 5 days.
3.What payment methods are accepted for MC74AC132DR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74AC132DR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74AC132DR2?
MC74AC132DR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74AC132DR2 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 MC74AC132DR2?
For technical support, including MC74AC132DR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74AC132DR2 requirements.
6.How does Aetrix verify that MC74AC132DR2 is sourced from the original manufacturer or authorized distributors?
All MC74AC132DR2 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 MC74AC132DR2 meets industry standards.
7.What is the process for return or replacement of MC74AC132DR2?
All MC74AC132DR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC74AC132DR2, 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 MC74AC132DR2 part is unused and in its original packaging.
Return procedure for MC74AC132DR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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