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onsemi 74F132SC
- Part No.:
- 74F132SC
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74F132SC.pdf
- Description:
- IC GATE NAND 4CH 2-INP 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,210
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Product details
Overview
74F132SC from Fairchild Semiconductor is a quad 2-input NAND Schmitt trigger IC in 14-lead SOIC (M14A) package, operating at +4.5V to +5.5V supply, with hysteresis of 0.4–0.8 V, propagation delay ≤12.0 ns (tPHL), and output drive capability of −1 mA/20 mA. It conditions slow-rising signals in digital timing and noise-prone interface circuits.
For engineers reviewing the 74F132SC datasheet, pinout, applications, or equivalent options, key selection criteria include input threshold asymmetry (VT+ = 1.5–2.0 V, VT− = 0.7–1.1 V), TTL-compatible I/O levels, SOIC-14 thermal and layout constraints, and Schmitt-triggered noise immunity for debouncing and waveform shaping.
Technical Context
The 74F132SC integrates four independent 2-input NAND gates, each preceded by a Schmitt-trigger input stage with positive feedback to generate distinct rising/falling thresholds. Its hysteresis (ΔVT ≈ 0.4–0.8 V) ensures clean transitions on noisy or slowly varying inputs.
Each gate uses level-shifting circuitry and a FAST™ bipolar output stage delivering standard TTL voltage levels (VOH ≥ 2.5 V at −1 mA, VOL ≤ 0.5 V at 20 mA) and fan-out of 50/33.3 (HIGH/LOW). It operates across 0°C to +70°C ambient with supply current up to 18.0 mA (ICCL).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | +4.5 V to +5.5 V - Ensures compatibility with standard 5 V TTL systems and margin against rail droop. |
| Hysteresis (ΔVT) | 0.4 V (min) to 0.8 V (typ) - Provides robust noise rejection for inputs with slow edges or EMI coupling. |
| Propagation Delay | tPHL ≤ 13.0 ns, tPLH ≤ 12.0 ns (CL = 50 pF) - Supports reliable operation in sub-10 MHz digital control and timing paths. |
| Output Drive | IOH = −1 mA, IOL = 20 mA - Sufficient to directly drive multiple TTL loads or small LEDs without buffering. |
| Input Thresholds | VT+ = 1.5–2.0 V, VT− = 0.7–1.1 V - Enables precise switching point control for signal conditioning and switch debouncing. |
| Operating Temperature | 0°C to +70°C ambient - Validated for commercial-grade industrial control panels and instrumentation. |
Pinout & Package
74F132SC is housed in a 14-lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150" narrow body (Package Number M14A), with standard pin spacing of 1.27 mm and footprint compatible with automated SMT assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 12, 13 | Gate Inputs (A1/B1, A2/B2, A3/B3, A4/B4) | Four independent 2-input NAND pairs accepting TTL-level signals with Schmitt-trigger hysteresis. |
| 3, 6, 10, 11 | Gate Outputs (O1, O2, O3, O4) | Standard FAST™ TTL outputs capable of sinking 20 mA or sourcing −1 mA under load. |
| 7 | GND | Ground reference for all internal logic and output stages; must be low-impedance for stable noise margin. |
| 14 | VCC | +5 V power supply pin; requires local 0.1 µF ceramic decoupling adjacent to pin for AC stability. |
Key Features
| Feature | Design Value |
|---|---|
| Quad 2-input NAND with Schmitt-trigger inputs | Enables simultaneous signal conditioning of four independent slow or noisy digital channels without external hysteresis components. |
| Input hysteresis ΔVT ≥ 0.4 V | Guarantees ≥400 mV noise immunity margin between rising and falling thresholds, reducing false triggering in EMI-heavy environments. |
| TTL-compatible I/O levels | Directly interfaces with legacy 74LS, 74F, and microcontroller GPIO without level-shifting circuitry. |
| FAST™ bipolar output structure | Delivers fast edge rates and high sink current (20 mA) suitable for driving LEDs, relays, or multiple downstream TTL inputs. |
Applications
| Switch Debouncing | Digital Signal Conditioning |
|---|---|
Use Scenario: Mechanical push-button or rotary encoder inputs in industrial HMI panels where contact bounce causes multiple unintended logic transitions. IC Role / Device Role / Timing Role: 74F132SC acts as a hardware debouncer by converting noisy, millisecond-scale switch transients into clean, monotonic logic edges. Use Value: Eliminates need for software debounce delays or RC + comparator circuits, reducing firmware complexity and improving real-time response. | Use Scenario: Cleaning up slow-rising clock or enable signals from microcontrollers or sensors before feeding into synchronous logic blocks. IC Role / Device Role / Timing Role: 74F132SC serves as a waveform sharpener, transforming slew-limited signals into full-rail TTL transitions with defined timing margins. Use Value: Prevents metastability and setup/hold violations in downstream flip-flops or counters by ensuring monotonic, jitter-free edges. |
| Noise-Immune Interface | Legacy System Glue Logic |
Use Scenario: Interfacing long-wire or unshielded sensor outputs (e.g., limit switches, proximity sensors) to 5 V digital controllers in factory automation. IC Role / Device Role / Timing Role: 74F132SC functions as a noise-tolerant input buffer, rejecting common-mode spikes and line-induced transients via input hysteresis. Use Value: Increases system reliability without requiring additional filtering components or PCB area for RC networks. | Use Scenario: Replacing obsolete 74LS132 or discrete transistor-based NAND-Schmitt circuits in repair or upgrade of legacy test equipment and telecom racks. IC Role / Device Role / Timing Role: 74F132SC provides drop-in functional replacement with identical pinout and improved speed/noise margin over LS-family equivalents. Use Value: Extends service life of aging systems while maintaining backward compatibility and minimizing redesign effort. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NAND Schmitt trigger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74F132N | Same logic function and electrical specs; PDIP-14 package (N14A), not SOIC. Slightly higher ICC (18.5 mA max). | Preferred for through-hole prototyping or legacy board rework where SOIC footprint is unavailable. | Select when manual soldering or socket-based testing is required; no change to logic design or timing analysis. |
| 74HC132D | CMOS technology: lower ICC (< 2 µA), wider VCC range (2–6 V), but reduced noise margin (ΔVT ≈ 0.33 V typ) and slower propagation (tPD ≈ 20 ns @ 5 V). | Suitable for battery-powered or mixed-voltage systems, but less robust in electrically noisy industrial settings. | Choose for ultra-low-power or 3.3 V–5 V flexible designs; verify hysteresis margin meets EMI requirements before substitution. |
Compared with SN74F132N and 74HC132D, the 74F132SC offers optimal balance of speed (≤13 ns), noise immunity (≥0.4 V hysteresis), and SOIC-14 surface-mount compatibility for high-density commercial control boards-without compromising TTL interoperability or requiring layout changes.
Availability
74F132SC is available at Aetrix Electronics and suitable for industrial control panels, test equipment interfaces, and embedded HMI systems requiring stable component supply and long-term obsolescence management.
Supply support for 74F132SC 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
Fairchild Semiconductor was a leading designer of high-performance analog and logic ICs, acquired by ON Semiconductor in 2016; its legacy FAST™ TTL products remain widely deployed in industrial and communications infrastructure.
The 74F132SC belongs to the FAST™ TTL logic family, engineered specifically for high-speed, noise-immune digital interfacing in commercial-grade systems where reliability and signal integrity outweigh ultra-low power demands.
FAQ
What is the recommended operating voltage range for the 74F132SC?
The 74F132SC is specified to operate reliably from +4.5 V to +5.5 V. Operation outside this range may cause undefined output states or accelerated device degradation. The typical supply is +5.0 V, and the part exhibits stable hysteresis and propagation delay performance across the full range, making it suitable for systems with nominal 5 V rails subject to minor regulation tolerance.
Does the 74F132SC have the same pinout as the 74LS132?
Yes, the 74F132SC shares identical pin assignment with the 74LS132: pins 1–2–3 (Gate 1), 4–5–6 (Gate 2), 8–9–10 (Gate 3), 12–13–11 (Gate 4), with VCC on pin 14 and GND on pin 7. This allows direct replacement in existing layouts, though designers must verify that the faster propagation and higher drive strength of the 74F132SC do not induce signal integrity issues in marginal traces.
What is the minimum hysteresis voltage guaranteed for the 74F132SC?
The 74F132SC guarantees a minimum hysteresis voltage (ΔVT = VT+ − VT−) of 0.4 V across temperature and supply voltage, per the datasheet's DC Electrical Characteristics table. Typical hysteresis is 0.8 V at VCC = 5.0 V and TA = +25°C, providing consistent noise margin even under worst-case conditions.
Can the 74F132SC drive an LED directly?
Yes, the 74F132SC can drive a standard red LED directly when configured as an active-low output (i.e., LED anode to VCC, cathode to output). With IOL = 20 mA maximum and VOL ≤ 0.5 V, it supports typical 2–20 mA LED currents using a series resistor (e.g., 220 Ω for ~15 mA at 5 V). Avoid sustained continuous drive above 15 mA to maintain junction temperature within limits.
Is the 74F132SC RoHS compliant?
The original 74F132SC (manufactured pre-2006) is not RoHS compliant, as it contains lead in the SOIC package finish and uses lead-based die attach. Modern re-manufactured or second-source equivalents may carry RoHS certification, but the legacy Fairchild 74F132SC part itself complies only with exemption 7a (high-melting-point solder) under early EU directives and is intended for legacy repair and industrial use where exemptions apply.
74F132SC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74F
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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):
- -
- Current - Output High, Low:
- 1mA, 20mA
- Input Logic Level - Low:
- 1.1V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 12.5ns @ 5V, 50pF
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
74F132SC FAQ
1.How can I place an order for 74F132SC through Aetrix?
Please submit a Request for Quotation (RFQ) for 74F132SC 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 74F132SC reliable?
The price and inventory of 74F132SC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74F132SC is usually 5 days.
3.What payment methods are accepted for 74F132SC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74F132SC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74F132SC?
74F132SC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74F132SC 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 74F132SC?
For technical support, including 74F132SC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74F132SC requirements.
6.How does Aetrix verify that 74F132SC is sourced from the original manufacturer or authorized distributors?
All 74F132SC 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 74F132SC meets industry standards.
7.What is the process for return or replacement of 74F132SC?
All 74F132SC units undergo pre-shipment inspection (PSI). If there is an issue with 74F132SC, 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 74F132SC part is unused and in its original packaging.
Return procedure for 74F132SC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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