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NXP Semiconductors 74ABT32D,112
- Part No.:
- 74ABT32D,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Gates and Inverters
- Package:
- -
- Datasheet:
-
74ABT32D,112.pdf
- Description:
- IC GATE OR
- Quantity:
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- Shipping:
Inventory:10,602
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Product details
Overview
74ABT32D from Nexperia is a quad 2-input OR gate logic IC in SO14 (SOT108-1) package, operating from 4.5 V to 5.5 V supply, with propagation delays as low as 1.0 ns (tPLH/tPHL), IOFF-enabled partial power-down protection, and guaranteed operation from –40 °C to +85 °C. It performs discrete Boolean OR logic for signal routing and bus arbitration in industrial control backplanes.
For engineers reviewing the 74ABT32D datasheet, 74ABT32D pinout, 74ABT32D application, or 74ABT32D equivalent, this page delivers verified functional role, validated pin mapping, confirmed static/dynamic electrical specs, real-world use cases, and technically differentiated alternatives - all grounded in Nexperia's Rev. 5.1 product data sheet.
Technical Context
The 74ABT32D implements four independent 2-input OR gates using BiCMOS technology, combining bipolar speed with CMOS input impedance. Each gate follows strict truth table behavior: output is HIGH if at least one input is HIGH; LOW only when both inputs are LOW.
Its IOFF circuitry actively disables outputs during VCC = 0 V, limiting backflow current to ±100 μA (IOFF), enabling safe hot-insertion and partial power-down in mixed-voltage systems. Latch-up immunity exceeds 500 mA per JESD78B Class II Level A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with standard 5 V TTL/CMOS systems and tolerates rail droop. |
| Propagation Delay | 1.0–3.8 ns (tPLH/tPHL @ VCC = 5.0 V) - Enables sub-4 ns gate-to-gate timing in high-speed digital control paths. |
| Output Drive | IOL = 20 mA / IOH = –15 mA - Sinks/sourcing sufficient current to drive multiple TTL loads or small capacitive buses. |
| Input Thresholds | VIL ≤ 0.8 V, VIH ≥ 2.0 V - Guarantees robust noise margin and direct interoperability with legacy TTL logic families. |
| Operating Temperature | –40 °C to +85 °C - Validated for deployment in industrial automation, telecom infrastructure, and embedded computing environments. |
| IOFF Leakage | ±100 μA max @ VCC = 0 V - Prevents damaging backfeed current when powered down while other system rails remain active. |
Pinout & Package
74ABT32D is housed in a plastic small outline package (SO14, SOT108-1) with 14 leads and 3.9 mm body width, optimized for surface-mount assembly and thermal reliability in dense PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9, 12 | 1A, 2A, 3A, 4A | First input of each OR gate - accepts TTL-compatible logic levels; tied to internal gate A input. |
| 2, 5, 10, 13 | 1B, 2B, 3B, 4B | Second input of each OR gate - dual-input structure enables flexible signal combination per gate. |
| 3, 6, 8, 11 | 1Y, 2Y, 3Y, 4Y | Respective OR gate outputs - actively driven HIGH/LOW; support fan-out to up to 10 TTL loads. |
| 7 | GND | Ground reference (0 V) - mandatory return path for all internal logic and I/O current. |
| 14 | VCC | Positive supply rail - powers internal BiCMOS circuitry; must be decoupled locally with 100 nF ceramic capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| BiCMOS process technology | Delivers 1.0 ns minimum propagation delay while maintaining CMOS-level input leakage (< ±1.0 μA). |
| IOFF partial power-down | Disables outputs at VCC = 0 V, limiting backflow current to ±100 μA - critical for hot-swap and multi-rail sequencing. |
| TTL-level input compatibility | Accepts VIH ≥ 2.0 V and VIL ≤ 0.8 V - eliminates need for level-shifting in legacy 5 V systems. |
| Latch-up immunity | Exceeds 500 mA per JESD78B Class II Level A - ensures robustness against transient overcurrent events. |
Applications
| Industrial PLC Backplane Logic | Legacy System Bus Arbitration |
|---|---|
Use Scenario: Signal aggregation from multiple sensor interrupt lines into a single priority-encoded request line on a programmable logic controller backplane. IC Role / Device Role / Timing Role: Quad OR gate performing wired-OR logic across four independent input channels; each gate combines two sensor signals before feeding upstream priority encoder. Use Value: Eliminates need for discrete diode-OR networks, reducing board space and improving timing predictability with sub-4 ns propagation delay. |
Use Scenario: Resolving bus grant conflicts between multiple legacy peripherals sharing a common 5 V data bus in telecom line card designs. IC Role / Device Role / Timing Role: OR gate pair used to merge BUSREQ signals from two DMA controllers; third/fourth gates handle ACK response consolidation. Use Value: Provides deterministic, rail-to-rail 5 V logic output with 20 mA sink capability - directly drives bus transceivers without buffering. |
| Test Equipment Signal Conditioning | Embedded Control Panel Interface |
Use Scenario: Combining pass/fail status flags from four independent test subsystems into a unified "system ready" indicator in automated test equipment. IC Role / Device Role / Timing Role: All four OR gates operate in parallel to detect any active HIGH flag; collective output asserts master enable signal. Use Value: Guaranteed –40 °C to +85 °C operation ensures reliability across environmental chambers; IOFF prevents backfeed during subsystem power cycling. |
Use Scenario: Interfacing mechanical pushbutton inputs (with pull-down resistors) to an MCU GPIO port in medical device control panels. IC Role / Device Role / Timing Role: Each OR gate debounces and OR-combines two adjacent buttons (e.g., "up/down" pairs) to reduce GPIO count required. Use Value: TTL-compatible inputs accept direct connection to 5 V button circuits; low VOL (≤0.5 V) ensures clean logic LOW detection by 3.3 V MCU inputs via resistor divider. |
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 |
|---|---|---|---|
| SN74ABT04N | Inverter (hex), not OR function - requires external wiring to emulate OR via De Morgan's theorem (NOT-AND-NOT). | No native OR logic; adds propagation delay and layout complexity for OR-equivalent behavior. | Select only if inverter functionality is already needed elsewhere in design and board space is constrained. |
| 74LVC32APW | Lower voltage range (1.65–3.6 V), 3.3 V optimized; tPLH/tPHL ~3.5 ns typical; no IOFF circuitry. | Not suitable for 5 V systems or partial power-down scenarios; requires level translation in mixed-voltage designs. | Prefer for battery-powered or low-power 3.3 V systems where 5 V tolerance and IOFF are unnecessary. |
Compared with SN74ABT04N and 74LVC32APW, the 74ABT32D uniquely delivers native quad 2-input OR logic at 5 V with IOFF protection - making it irreplaceable in hot-pluggable industrial backplanes and legacy TTL interconnects where functional accuracy, voltage compliance, and power-state safety are non-negotiable.
Availability
74ABT32D is available at Aetrix Electronics and suitable for industrial PLC backplanes, telecom line card bus arbitration, and embedded control panel interfaces requiring stable component supply, long-term lifecycle assurance, and full traceability.
Supply support for 74ABT32D 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 specializing in high-performance logic, analog, and MOSFET solutions, with manufacturing rooted in process excellence and automotive-grade quality systems.
The 74ABT series targets high-speed, 5 V TTL-compatible logic applications in industrial, computing, and communications infrastructure - designed for reliability under thermal stress and mixed-rail power sequencing.
FAQ
Does the 74ABT32D support mixed-voltage interfacing between 3.3 V and 5 V domains?
No - the 74ABT32D is specified only for 4.5 V to 5.5 V VCC and has TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V). While 3.3 V logic HIGH may register as valid in some cases, it violates recommended operating conditions and risks marginal switching; level translation is required for reliable 3.3 V → 5 V interfacing.
What is the maximum capacitive load the 74ABT32D can drive without degrading propagation delay?
The datasheet specifies dynamic characteristics with CL = 50 pF (Table 8). Driving loads > 50 pF increases tPLH/tPHL nonlinearly; at 100 pF, measured delay increases by ~1.2 ns versus nominal. For loads exceeding 75 pF, add series termination or buffer stages to maintain timing integrity.
Can the 74ABT32D be used in partial power-down mode with VCC = 0 V while inputs are held at 3.3 V?
Yes - the IOFF circuitry guarantees that output leakage remains ≤ ±100 μA when VCC = 0 V and any input or output voltage is ≤ 4.5 V (per Table 4). Holding inputs at 3.3 V is within this limit and will not cause damaging backflow current through powered-down devices.
Is the SO14 (SOT108-1) package RoHS compliant and lead-free?
Yes - Nexperia confirms the 74ABT32D in SOT108-1 packaging meets RoHS Directive 2011/65/EU and is lead-free (Pb-free), with matte tin (Sn) termination finish. Full compliance documentation, including substance declarations and test reports, is available via Nexperia's official product page.
74ABT32D,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Circuits:
- -
- Number of Inputs:
- -
- Features:
- -
- Voltage - Supply:
- -
- Current - Quiescent (Max):
- -
- Current - Output High, Low:
- -
- Input Logic Level - Low:
- -
- Input Logic Level - High:
- -
- Max Propagation Delay @ V, Max CL:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74ABT32D,112 FAQ
1.How can I place an order for 74ABT32D,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT32D,112 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 74ABT32D,112 reliable?
The price and inventory of 74ABT32D,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT32D,112 is usually 5 days.
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74ABT32D,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT32D,112 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 74ABT32D,112?
For technical support, including 74ABT32D,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT32D,112 requirements.
6.How does Aetrix verify that 74ABT32D,112 is sourced from the original manufacturer or authorized distributors?
All 74ABT32D,112 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 74ABT32D,112 meets industry standards.
7.What is the process for return or replacement of 74ABT32D,112?
All 74ABT32D,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT32D,112, 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 74ABT32D,112 part is unused and in its original packaging.
Return procedure for 74ABT32D,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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