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Nexperia USA Inc. 74ABT32DB,118
- Part No.:
- 74ABT32DB,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74ABT32DB,118.pdf
- Description:
- IC GATE OR 4CH 2-INP 14SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,647
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Product details
Overview
74ABT32DB,118 from Nexperia is a quad 2-input OR gate logic IC operating at 4.5 V to 5.5 V supply, delivering sub-3.8 ns propagation delay (tPLH/tPHL), ±20 mA output drive, and IOFF-enabled partial power-down protection. It functions as a discrete-level combinational logic element in bus interface, address decoding, and enable control circuits within industrial control and legacy TTL-compatible systems.
For engineers reviewing the 74ABT32DB,118 datasheet, 74ABT32DB,118 pinout, 74ABT32DB,118 application, or 74ABT32DB,118 equivalent, this device is selected for high-speed 5 V TTL-level signal combining where backflow current prevention during power sequencing is required - especially in multi-rail systems with staggered supply activation.
Technical Context
The 74ABT32DB,118 implements four independent OR gates using BiCMOS technology, enabling TTL-compatible input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) and rail-to-rail CMOS-like output swing (VOH ≥ 2.5 V at -15 mA, VOL ≤ 0.5 V at 20 mA). Its IOFF circuit actively disables outputs when VCC = 0 V, limiting reverse current to ±100 μA.
Dynamic performance is characterized by matched propagation delays across all four channels (tPLH/tPHL ≤ 3.8 ns over -40 °C to +85 °C), with guaranteed output skew ≤ 0.5 ns between any two outputs switching in the same direction - critical for synchronous logic fan-out integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 4.5 V to 5.5 V - ensures compatibility with standard 5 V TTL and mixed-voltage system rails. |
| Propagation delay | 1.0–3.8 ns - enables reliable operation in >250 MHz clock-domain gating and fast enable path timing. |
| Output drive | ±20 mA - supports direct driving of multiple TTL inputs or moderate capacitive loads (<50 pF). |
| IOFF leakage | ±100 μA at VCC = 0 V - prevents destructive backfeed current during hot-swap or partial power-down sequences. |
| Operating temperature | -40 °C to +85 °C - qualified for industrial ambient environments without derating. |
| Input clamping voltage | -1.2 V - protects against negative transients exceeding -1.2 V on inputs without external diodes. |
| ESD rating | HBM >2000 V, CDM >1000 V - meets robustness requirements for board-level handling and assembly. |
Pinout & Package
74ABT32DB,118 is packaged in SSOP14 (SOT337-1), a plastic shrink small outline package with 14 leads, body width 5.3 mm, and 0.65 mm lead pitch - optimized for high-density PCB layouts while maintaining hand-solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 2A, 3A, 4A | Input A of Gate n | First OR input per gate; accepts TTL/CMOS logic levels; VIH ≥ 2.0 V, VIL ≤ 0.8 V. |
| 1B, 2B, 3B, 4B | Input B of Gate n | Second OR input per gate; electrically identical to corresponding A input. |
| 1Y, 2Y, 3Y, 4Y | Output Y of Gate n | Active-high OR result; drives loads up to 20 mA low or -15 mA high with defined VOH/VOL. |
| GND (Pin 7) | Ground reference | 0 V return path for all internal logic and output stages; must be low-impedance. |
| VCC (Pin 14) | Positive supply | Primary power rail; IOFF activates when VCC = 0 V to isolate outputs from backfeed. |
Key Features
| Feature | Design Value |
|---|---|
| BiCMOS process architecture | Combines bipolar speed and CMOS low static power: ICC ≤ 50 μA at VCC = 5.5 V, enabling low-quiescent logic in always-on subsystems. |
| IOFF partial power-down | Outputs enter high-impedance state with ±100 μA leakage when VCC = 0 V - eliminates need for external isolation switches in multi-supply domains. |
| TTL-level input compatibility | VIH = 2.0 V min and VIL = 0.8 V max allow direct connection to legacy 5 V TTL outputs without level-shifting. |
| Latch-up immunity | Exceeds 500 mA per JESD78B Class II Level A - ensures robustness against transient-induced parasitic thyristor conduction. |
| Output skew control | ≤0.5 ns skew between any two outputs guarantees synchronized assertion across all four OR results in time-critical fan-out paths. |
Applications
| Industrial Bus Arbitration | Legacy System Address Decoding |
|---|---|
|
Use Scenario: Resolving contention among multiple masters on a shared parallel data bus in PLC backplanes. IC Role / Device Role / Timing Role: OR-combines BUSY signals from peripheral controllers to generate a centralized BUS_BUSY flag. Use Value: Sub-4 ns delay ensures real-time arbitration response; IOFF prevents bus leakage when individual modules power down independently. |
Use Scenario: Generating chip-select signals for memory-mapped peripherals in 8-bit microcontroller systems. IC Role / Device Role / Timing Role: Combines address bits and control lines (e.g., RD/WR) to activate specific peripheral decode windows. Use Value: TTL-compatible inputs interface directly with MC68HC11 or Z80 outputs; 20 mA drive sinks decoder load without buffering. |
| Power Sequencing Enable Logic | Redundant Signal Monitoring |
|
Use Scenario: Enabling downstream regulators only after primary and auxiliary supplies stabilize in telecom power modules. IC Role / Device Role / Timing Role: OR-gates monitor OK signals from three independent DC/DC converters to assert a unified POWER_OK line. Use Value: IOFF blocks reverse current if one converter powers down while others remain active - preserving system-level fault containment. |
Use Scenario: Detecting failure in dual-redundant sensor interfaces by OR-ing valid-data flags from two independent ADC paths. IC Role / Device Role / Timing Role: Generates a single VALID_DATA signal that remains asserted if either channel reports clean data. Use Value: Matched propagation delay (<0.5 ns skew) ensures simultaneous evaluation - eliminating race conditions in safety-critical monitoring. |
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 |
|---|---|---|---|
| SN74ABT32N | PDIP-14 package; no SSOP variant; identical electrical specs and IOFF behavior. | Preferred for through-hole prototyping or legacy wave-soldered assemblies; lacks space-saving SSOP footprint. | Select when mechanical compatibility with DIP sockets or manual rework is prioritized over board area. |
| 74LVC32APW | 3.3 V only (1.65–3.6 V); lower drive (±24 mA), no IOFF; LVC logic family. | Requires level translation for 5 V systems; unsuitable for partial power-down scenarios involving 5 V rails. | Choose only in pure 3.3 V domains where ultra-low static power (ICC < 10 μA) outweighs IOFF necessity. |
Compared with SN74ABT32N and 74LVC32APW, the 74ABT32DB,118 uniquely delivers 5 V operation, SSOP14 density, and IOFF - making it the sole option for compact, hot-swappable 5 V logic where backfeed prevention is mandatory.
Availability
74ABT32DB,118 is available at Aetrix Electronics and suitable for industrial bus arbitration, legacy address decoding, and power sequencing enable logic requiring stable component supply across extended temperature ranges and long-lifecycle programs.
Supply support for 74ABT32DB,118 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 efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The ABT logic family targets high-speed 5 V systems requiring TTL compatibility, robust ESD/latch-up immunity, and advanced power management features like IOFF - specifically engineered for industrial control and infrastructure equipment.
FAQ
Can 74ABT32DB,118 operate at 3.3 V?
No. The device is specified only for 4.5 V to 5.5 V supply operation. At 3.3 V, input thresholds (VIH ≥ 2.0 V) may not be reliably met, and output drive strength degrades significantly. It lacks 3.3 V characterization per its datasheet - attempting 3.3 V operation risks functional failure or undefined timing behavior.
What is the purpose of the IOFF feature?
IOFF disables all outputs when VCC = 0 V, limiting backflow current to ±100 μA. This prevents damage or logic corruption when the device is powered down while other system components remain active - essential in hot-plug, multi-rail, or partial-power-down architectures common in industrial backplanes and telecom modules.
Is 74ABT32DB,118 pin-compatible with 74LS32?
Yes, pinout matches standard 14-pin quad 2-input OR gate layout (SO14/TSSOP14/SSOP14), including identical A/B/Y/GND/VCC positions. However, electrical differences exist: ABT offers higher speed (sub-4 ns vs. ~15 ns), stronger drive (±20 mA vs. ±8 mA), and IOFF - requiring verification of timing margins and power sequencing in LS-replacement designs.
Does it require external pull-up resistors on outputs?
No. Outputs are push-pull and fully specified for driving TTL/CMOS loads directly. Pull-ups are unnecessary unless open-drain emulation is intentionally required - which contradicts the device's designed active-drive architecture and would degrade speed and noise immunity.
74ABT32DB,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74ABT
- Package/Case:
- 14-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- OR Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 50 µA
- Current - Output High, Low:
- 15mA, 20mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 3.4ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SSOP
74ABT32DB,118 FAQ
1.How can I place an order for 74ABT32DB,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ABT32DB,118 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 74ABT32DB,118 reliable?
The price and inventory of 74ABT32DB,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ABT32DB,118 is usually 5 days.
3.What payment methods are accepted for 74ABT32DB,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ABT32DB,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ABT32DB,118?
74ABT32DB,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ABT32DB,118 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 74ABT32DB,118?
For technical support, including 74ABT32DB,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ABT32DB,118 requirements.
6.How does Aetrix verify that 74ABT32DB,118 is sourced from the original manufacturer or authorized distributors?
All 74ABT32DB,118 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 74ABT32DB,118 meets industry standards.
7.What is the process for return or replacement of 74ABT32DB,118?
All 74ABT32DB,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT32DB,118, 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 74ABT32DB,118 part is unused and in its original packaging.
Return procedure for 74ABT32DB,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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