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Nexperia USA Inc. 74HCT32D/C4J
- Part No.:
- 74HCT32D/C4J
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HCT32D/C4J.pdf
- Description:
- IC GATE OR 4CH 2-INP 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:42,500
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Product details
Overview
74HCT32D/C4J from Nexperia is a quad 2-input OR gate IC with TTL-compatible inputs, 4.5 V to 5.5 V supply range, −40 °C to +125 °C operating temperature, and SO14 (SOT108-1) package. It delivers symmetrical output impedance, balanced propagation delays (11–36 ns), and high noise immunity for digital logic interfacing in industrial control and embedded system bus management.
For engineers reviewing the 74HCT32D/C4J datasheet, 74HCT32D/C4J pinout, 74HCT32D/C4J application, or 74HCT32D/C4J equivalent, key selection criteria include input voltage compatibility with legacy TTL systems, guaranteed operation across extended temperature, propagation delay consistency across all four gates, and SO14 package suitability for through-hole and reflow assembly in space-constrained PCBs.
Technical Context
This device implements four independent OR logic functions in a single monolithic CMOS structure with input clamp diodes enabling safe interface to voltages exceeding VCC when used with current-limiting resistors. Its TTL-level input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) ensure direct compatibility with 5 V TTL outputs without level shifting.
Each gate features matched rise/fall times (7–22 ns), low static current (≤40 μA at 125 °C), and robust ESD protection (HBM >2000 V, CDM >1000 V). The SO14 package provides thermal resistance of 10.1 mW/K above 100 °C, supporting stable operation in thermally demanding environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Four independent 2-input OR gates; each performs Boolean Y = A + B |
| Supply Voltage Range | 4.5 V to 5.5 V - ensures compatibility with standard 5 V TTL and mixed-voltage systems |
| Input Thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V - guarantees reliable recognition of TTL logic levels |
| Propagation Delay | 11–36 ns (VCC = 4.5 V, CL = 50 pF) - enables timing-critical combinational logic in sub-40 ns paths |
| Output Drive | ±4.0 mA (VOH/VOL) - sufficient to drive 10 LS-TTL loads or multiple CMOS inputs |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood, industrial PLC, and power supply control applications |
| ESD Protection | HBM >2000 V, CDM >1000 V - meets IEC 61000-4-2 Level 2 for board-level robustness |
Pinout & Package
74HCT32D/C4J uses the SO14 (SOT108-1) plastic small outline package: 14-pin, 3.9 mm body width, 1.27 mm lead pitch, and gull-wing leads compatible with standard surface-mount reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 4A, 9A, 12A | Input A of Gates 1–4 | First input terminal per OR gate; accepts TTL-level signals directly |
| 2B, 5B, 10B, 13B | Input B of Gates 1–4 | Second input terminal per OR gate; electrically identical to A inputs |
| 3Y, 6Y, 8Y, 11Y | Output Y of Gates 1–4 | Active-high OR result; drives downstream logic or enable lines |
| 7 | GND | Reference ground (0 V); must be connected to system common return |
| 14 | VCC | Positive supply (4.5–5.5 V); decoupling capacitor required near pin |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | VIH ≥ 2.0 V and VIL ≤ 0.8 V at 5 V supply - eliminates need for external level shifters in mixed-logic systems |
| Symmetrical output impedance | Matched pull-up/pull-down strength - ensures consistent rise/fall times and reduces signal distortion |
| Balanced propagation delays | tPLH and tPHL differ by ≤10% - critical for glitch-free timing in parallel data paths |
| Input clamp diodes | Enables safe overvoltage tolerance up to ±20 mA clamping current - allows use with current-limiting resistors for >VCC inputs |
| Extended temperature range | Specified from −40 °C to +125 °C - supports deployment in automotive engine control modules and industrial motor drives |
Applications
| Industrial PLC I/O Expansion | Legacy System Bus Arbitration |
|---|---|
|
Use Scenario: Combining multiple sensor fault flags into a single system alert line in programmable logic controllers. IC Role / Device Role / Timing Role: OR gate aggregating four independent digital fault signals with deterministic <36 ns worst-case delay. Use Value: Reduces PCB routing complexity and eliminates need for microcontroller polling, lowering system latency and firmware overhead. |
Use Scenario: Resolving bus grant requests from four peripheral controllers competing for shared memory access. IC Role / Device Role / Timing Role: Priority-agnostic OR function generating a unified bus request signal for central arbiter logic. Use Value: Enables immediate hardware-level contention detection without software intervention or clock-domain crossing. |
| Power Sequencing Enable Logic | LED Status Indicator Aggregation |
|
Use Scenario: Enabling a DC-DC converter only when all upstream power rails are valid and thermal shutdown is inactive. IC Role / Device Role / Timing Role: Final-stage OR combining three "OK" signals and one "not-shutdown" signal to drive EN pin. Use Value: Provides fail-safe power-up sequencing with sub-40 ns response, preventing premature regulator activation during brown-out recovery. |
Use Scenario: Driving a single status LED that illuminates if any of four subsystems reports an error condition. IC Role / Device Role / Timing Role: Wired-OR replacement using discrete gates to avoid voltage drop and leakage issues of passive diode-OR. Use Value: Ensures full logic-level drive (≥3.7 V VOH at 4 mA) for bright, consistent LED illumination across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2-input OR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC32D | CMOS-level inputs (VIH = 3.15 V min at 4.5 V), wider 2.0–6.0 V supply range | Requires level translation when interfacing with 5 V TTL sources; better for mixed-supply or battery-powered designs | Select when system uses CMOS logic families exclusively or operates below 4.5 V |
| SN74LS32DR | Bipolar TTL technology; 4.75–5.25 V only; higher ICC (19 mA typical), slower (15–22 ns) | Higher power consumption and heat generation; not suitable for extended temperature or low-power designs | Select only for legacy TTL-only systems requiring pin-for-pin drop-in where power and temp range are secondary |
Compared with 74HCT32D/C4J, 74HC32D offers broader voltage flexibility but lacks native TTL compatibility, while SN74LS32DR matches pinout but sacrifices efficiency, temperature range, and noise immunity - making 74HCT32D/C4J optimal for modern 5 V industrial designs needing robustness and interoperability.
Availability
74HCT32D/C4J is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, power sequencing control, and legacy bus arbitration requiring stable component supply across extended temperature and long production lifecycles.
Supply support for 74HCT32D/C4J 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
Nexperia is a global semiconductor expert focused on essential semiconductors, delivering high-performance, reliable components for automotive, industrial, and consumer applications.
The 74HCT32 belongs to Nexperia's 74HCT logic family, engineered specifically for seamless integration between TTL and CMOS systems in harsh-environment industrial controls and power management circuits.
FAQ
Is 74HCT32D/C4J pin-compatible with 74LS32?
Yes - 74HCT32D/C4J uses the same SO14 footprint and pin assignment as SN74LS32, including identical 1A–4A, 1B–4B, 1Y–4Y, GND, and VCC locations. This enables direct replacement in existing PCB layouts without redesign, provided system-level timing and power requirements are verified.
What is the maximum output current per pin, and how does it affect fanout?
Each output delivers ±4.0 mA at VOH ≥ 3.7 V and VOL ≤ 0.4 V (VCC = 4.5 V, TA = 125 °C). This supports driving up to 10 LS-TTL inputs (each requiring 0.4 mA high-level input current) or unlimited CMOS loads, making it suitable for moderate-fanout logic distribution without buffering.
Can 74HCT32D/C4J operate reliably at 3.3 V supply?
No - the 74HCT32 variant is specified only for 4.5–5.5 V operation. At 3.3 V, input thresholds become undefined and output drive degrades significantly. For 3.3 V systems, use 74HC32D or 74LVC32A, which are characterized down to 2.0 V and 1.65 V respectively.
Does the SO14 package require thermal pad connection or special layout considerations?
No - the SO14 (SOT108-1) package has no exposed thermal pad. Standard SMT layout rules apply: 0.15 mm solder mask dams, 0.2 mm stencil aperture reduction, and 10–12 mil trace width for VCC/GND. Thermal derating begins linearly at 10.1 mW/K above 100 °C ambient.
74HCT32D/C4J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- OR Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 4mA, 5.2mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 1.6V
- Max Propagation Delay @ V, Max CL:
- 24ns @ 4.5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
74HCT32D/C4J FAQ
1.How can I place an order for 74HCT32D/C4J through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT32D/C4J 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 74HCT32D/C4J reliable?
The price and inventory of 74HCT32D/C4J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT32D/C4J is usually 5 days.
3.What payment methods are accepted for 74HCT32D/C4J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT32D/C4J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT32D/C4J?
74HCT32D/C4J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT32D/C4J 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 74HCT32D/C4J?
For technical support, including 74HCT32D/C4J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT32D/C4J requirements.
6.How does Aetrix verify that 74HCT32D/C4J is sourced from the original manufacturer or authorized distributors?
All 74HCT32D/C4J 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 74HCT32D/C4J meets industry standards.
7.What is the process for return or replacement of 74HCT32D/C4J?
All 74HCT32D/C4J units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT32D/C4J, 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 74HCT32D/C4J part is unused and in its original packaging.
Return procedure for 74HCT32D/C4J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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