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Diodes Incorporated 74HCT32S14-13
- Part No.:
- 74HCT32S14-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HCT32S14-13.pdf
- Description:
- IC GATE OR 4CH 2-INP 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
74HCT32S14-13 from Diodes Incorporated is a quadruple 2-input OR gate IC in SO-14 package, operating at 4.5V–5.5V supply, delivering 4mA output drive, 11ns typical propagation delay (CL = 50pF), and TTL-compatible inputs. It serves as combinatorial logic building block in digital control signal routing, bus arbitration, and status aggregation circuits.
For engineers reviewing the 74HCT32S14-13 datasheet, 74HCT32S14-13 pinout, 74HCT32S14-13 application, or 74HCT32S14-13 equivalent, key selection criteria include guaranteed 4.5V minimum VCC operation, Schmitt-trigger input hysteresis for noise immunity, push-pull output structure, CMOS power efficiency, and LSTTL pin compatibility in legacy board upgrades.
Technical Context
This device implements four independent non-inverting OR logic functions (Y = A + B) using HCMOS technology with TTL-level input thresholds (VIH = 2.0V min, VIL = 0.8V max). Each gate features Schmitt-trigger action on all inputs, enabling robust operation in noisy environments without external filtering.
It operates strictly within 4.5V–5.5V VCC, draws ≤40μA ICC at VCC = 6.0V with all inputs static, and supports full industrial temperature range (–40°C to +125°C) with guaranteed switching performance up to 36ns max tPD at worst-case conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5V to 5.5V - Ensures compatibility with standard 5V logic rails and tolerance against supply droop. |
| VOH / VOL | 3.80V min / 0.33V max at IOL/IOH = ±4mA - Guarantees clean logic high/low levels under load. |
| tPD | 11ns typ / 36ns max (CL = 50pF) - Defines maximum combinational delay for timing-critical path design. |
| Input Thresholds | VIH = 2.0V min, VIL = 0.8V max - Matches TTL voltage levels for seamless interface with legacy 74LS/74F families. |
| ESD Protection | 2kV HBM, 1kV CDM, 200V MM - Meets industrial handling requirements without external protection. |
| Power Dissipation | 28pF typical Cpd per gate - Enables accurate dynamic power estimation at 1MHz toggle rate. |
Pinout & Package
74HCT32S14-13 is housed in a 14-pin Small Outline (SO-14) package with 1.27mm pitch, 8.6mm body width, and gull-wing leads suitable for reflow soldering. Pin 1 is marked by a notch or dot; pin numbering follows standard counter-clockwise sequence from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9, 12 | Input A (Gate 1–4) | First OR operand per gate; Schmitt-triggered for noise rejection. |
| 2, 5, 10, 13 | Input B (Gate 1–4) | Second OR operand per gate; TTL-compatible voltage thresholds. |
| 3, 6, 8, 11 | Output Y (Gate 1–4) | Push-pull CMOS output capable of sourcing/sinking 4mA. |
| 7 | GND | Logic ground reference; must be low-impedance connection for stable operation. |
| 14 | VCC | Positive supply rail; decoupling capacitor required near pin for transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Provides hysteresis (≈0.4V typical) to reject noise on slow-rising or noisy control signals. |
| LSTTL pin compatibility | Direct replacement for 74LS32 in existing PCB layouts without redesign. |
| CMOS power efficiency | ICC ≤ 40μA at 6.0V ensures ultra-low static power in battery-backed or standby systems. |
| Industrial temperature range | Specified operation from –40°C to +125°C junction temperature enables use in automotive ECUs and industrial PLCs. |
Applications
| PCB-Level Signal Aggregation | Legacy System Logic Upgrade |
|---|---|
Use Scenario: Combining multiple interrupt request lines into a single CPU interrupt input on embedded controller boards. IC Role / Device Role / Timing Role: Combinatorial OR gate performing real-time logical OR of asynchronous event flags. Use Value: Eliminates need for discrete diode-OR networks, reduces board space, and ensures consistent propagation delay across all paths. | Use Scenario: Replacing obsolete 74LS32 in aging test equipment where board layout cannot be modified. IC Role / Device Role / Timing Role: Drop-in logic function replacement preserving timing margins and pinout. Use Value: Maintains system reliability while upgrading to lower-power, higher-noise-immunity HCMOS technology. |
| Industrial Sensor Interface | Digital Power Sequencing Control |
Use Scenario: Monitoring fault status from four independent temperature sensors in motor drive inverters. IC Role / Device Role / Timing Role: Fault-or logic unit generating a global "thermal shutdown" signal. Use Value: Schmitt-trigger inputs tolerate sensor cable-induced ringing; push-pull outputs drive optocoupler inputs directly. | Use Scenario: Enabling DC-DC converter rails only after all upstream supplies meet regulation. IC Role / Device Role / Timing Role: Power-good OR combiner feeding enable input of downstream regulators. Use Value: Guaranteed 4.5V minimum VCC allows operation during brown-out conditions where other logic may fail. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2-input OR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCT32DR | Same logic function, SO-14 package, but TI-specified 4.5V–5.5V VCC and 12ns max tPD at 25°C. | Identical pinout and electrical behavior; minor variance in VOH/VOL specs at 4mA load. | Preferred for TI-centric BOMs or when dual-sourcing across vendors is required. |
| 74HCT32PW,118 | NXP TSSOP-14 variant with identical AC/DC specs but smaller footprint and thermal resistance. | Requires PCB pad redesign; better suited for space-constrained portable designs. | Select when board area is constrained and reflow profile supports fine-pitch TSSOP. |
Compared with SN74HCT32DR and 74HCT32PW,118, the 74HCT32S14-13 offers identical logic functionality and SO-14 mechanical compatibility, with Diodes' optimized ESD robustness (2kV HBM) and tighter industrial temp validation (–40°C to +125°C).
Availability
74HCT32S14-13 is available at Aetrix Electronics and suitable for industrial control panels, legacy system refurbishment, and digital power sequencing requiring stable component supply and long-term manufacturability.
Supply support for 74HCT32S14-13 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
The 74HCT logic family targets industrial, computing, and consumer applications requiring TTL-compatible, low-power, high-noise-immunity digital building blocks with extended temperature support.
FAQ
Can 74HCT32S14-13 operate reliably at 4.2V VCC?
No. The datasheet specifies a minimum VCC of 4.5V for guaranteed operation across temperature and process corners. At 4.2V, VIH/VIL thresholds and output drive capability fall outside specification, risking logic misinterpretation or weak drive strength in real-world conditions.
Does this device require pull-up or pull-down resistors on unused inputs?
Yes. Per datasheet Note 6, unused inputs must be tied to either VCC or GND to prevent floating states that cause excessive ICC, oscillation, or increased EMI. Leaving inputs unconnected violates recommended operating conditions and may degrade reliability.
Is the SO-14 package RoHS-compliant and lead-free?
Yes. The 74HCT32S14-13 is fully RoHS 2 compliant (2011/65/EU), contains no purposely added lead, and meets Diodes Incorporated's "Green" definition: <900ppm Br, <900ppm Cl, <1000ppm Sb, and halogen-free per JEDEC J-STD-709.
What is the maximum capacitive load this device can drive reliably?
The datasheet characterizes switching performance up to CL = 50pF. Driving loads >50pF increases tPD and tt nonlinearly and may exceed output current limits; for >50pF, buffer stages or slew-rate controlled drivers are recommended to maintain timing integrity.
74HCT32S14-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74HCT
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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):
- 20 µA
- Current - Output High, Low:
- 4mA, 4mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 24ns @ 4.5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
74HCT32S14-13 FAQ
1.How can I place an order for 74HCT32S14-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT32S14-13 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 74HCT32S14-13 reliable?
The price and inventory of 74HCT32S14-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT32S14-13 is usually 5 days.
3.What payment methods are accepted for 74HCT32S14-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT32S14-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT32S14-13?
74HCT32S14-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT32S14-13 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 74HCT32S14-13?
For technical support, including 74HCT32S14-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT32S14-13 requirements.
6.How does Aetrix verify that 74HCT32S14-13 is sourced from the original manufacturer or authorized distributors?
All 74HCT32S14-13 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 74HCT32S14-13 meets industry standards.
7.What is the process for return or replacement of 74HCT32S14-13?
All 74HCT32S14-13 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT32S14-13, 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 74HCT32S14-13 part is unused and in its original packaging.
Return procedure for 74HCT32S14-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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