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NXP Semiconductors 74ABT2240D,112
- Part No.:
- 74ABT2240D,112
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74ABT2240D,112.pdf
- Description:
- IC BUFFER INVERT 5.5V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,860
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Product details
Overview
74ABT2240D from NXP Semiconductors (formerly Philips) is an octal inverting 3-state buffer with integrated 30 Ω series output termination, designed for high-speed bus driving in 5 V TTL-compatible systems. It features dual independent output-enable controls (1OE and 2OE), ±32 mA/12 mA drive capability, and propagation delays as low as 2.8 ns (tPLH) at 5 V. It is used in memory address drivers, clock distribution networks, and bidirectional bus transceivers.
For engineers reviewing the 74ABT2240D datasheet, 74ABT2240D pinout, 74ABT2240D application, or 74ABT2240D equivalent, this page delivers verified electrical parameters, package-specific pin mapping, functional role in bus interface design, and validated alternative options for sourcing continuity and layout compatibility.
Technical Context
The 74ABT2240D implements BiCMOS logic architecture to achieve low static current (50 µA typical ICC in 3-state) while maintaining TTL-level input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V) and fast edge rates (≤10 ns/V). Its dual 4-bit enable structure allows independent control of two groups of four inverting outputs.
Each output integrates matched 30 Ω series resistance in both HIGH and LOW states-eliminating external termination resistors and reducing ringing on transmission lines up to 50 pF load capacitance. The device supports live insertion/extraction and power-up 3-state behavior, ensuring glitch-free initialization during hot-swap scenarios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures robust operation across industrial-grade 5 V rail tolerances. |
| Propagation Delay (tPLH) | 2.8 ns typ. at CL = 50 pF - Enables reliable timing in sub-5 ns clock domains and high-frequency address/data buses. |
| Output Drive (IOL/IOH) | 12 mA sink / −32 mA source - Supports direct connection to multiple TTL inputs without fanout buffers. |
| Input Capacitance (CI) | 3 pF max - Minimizes loading on upstream drivers and preserves signal integrity in dense routing. |
| Series Output Resistance | 30 Ω in both HIGH and LOW states - Provides inherent impedance matching to reduce reflections on PCB traces. |
| Operating Temperature | −40 °C to +85 °C - Qualified for industrial and automotive under-hood environments. |
| Quiescent Current (ICC) | 50 µA typ. in 3-state - Reduces system standby power in always-on bus controllers. |
Pinout & Package
74ABT2240D is supplied in a plastic small outline package (SO20) with 20 leads and 7.5 mm body width (SOT163-1). This surface-mount package supports automated assembly and offers thermal performance suitable for sustained 32 mA output switching.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (1OE) | Group 1 output enable | Active-low control for Y0–Y3; asserts 3-state when HIGH. |
| 2–4, 6–8 (1A0–1A3) | Group 1 data inputs | Inverting inputs for outputs Y0–Y3; TTL-compatible thresholds. |
| 3, 5, 7, 9 (2Y0–2Y3) | Group 2 outputs | Inverted outputs driven by A0–A3 when 2OE = LOW. |
| 10 (GND) | Ground reference | Primary return path for all I/O and supply currents; must be low-inductance. |
| 11–13, 15–17 (2A3–2A0) | Group 2 data inputs | Inverting inputs for outputs Y0–Y3 of second group; mirrored logic function. |
| 12, 14, 16, 18 (1Y3–1Y0) | Group 1 outputs | Inverted outputs driven by A0–A3 when 1OE = LOW; include 30 Ω series termination. |
| 19 (2OE) | Group 2 output enable | Active-low control for Y0–Y3 of second group; independent of 1OE. |
| 20 (VCC) | Power supply | 5 V nominal supply; decoupling capacitor required within 1 cm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 30 Ω output termination | Eliminates need for 8 external series resistors, saving board space and BOM cost in bus driver designs. |
| Dual independent 4-bit enables | Allows time-multiplexed or partitioned bus access-e.g., separate control of address vs. data lanes. |
| Live insertion/extraction support | Prevents bus contention during hot-plug operations in modular backplane or docking station applications. |
| Power-up 3-state | Outputs remain high-impedance until VCC stabilizes, avoiding undefined states during power ramp. |
| Latch-up immunity | JESD78 compliant (>500 mA) - Ensures robustness against transient overvoltage events in noisy industrial settings. |
Applications
| Memory Address Drivers | System Clock Distribution |
|---|---|
Use Scenario: Driving 16-bit address bus from microcontroller to SRAM or Flash memory in embedded control units. IC Role / Device Role / Timing Role: Inverting buffer with 30 Ω series termination ensures clean edge transitions and minimizes overshoot on long PCB traces. Use Value: Eliminates external termination resistors per line, reducing component count by eight and improving signal fidelity at 20 MHz+ address strobe rates. | Use Scenario: Distributing a master clock signal to multiple synchronous peripherals (e.g., ADCs, DACs, FPGAs) on a single board. IC Role / Device Role / Timing Role: Low-skew inverting buffer with matched output impedance maintains signal integrity across parallel loads. Use Value: 2.8 ns tPLH and 4.3 ns tPHL ensure sub-5 ns inter-output skew, critical for setup/hold timing margin in multi-device clock trees. |
| PCI Bus Interface | Industrial I/O Expansion |
Use Scenario: Level-shifting and buffering between legacy PCI slot signals and modern FPGA-based bridge logic. IC Role / Device Role / Timing Role: Octal 3-state inverter provides bidirectional bus isolation with independent OE control for read/write direction management. Use Value: Dual OE pins allow precise timing control of bus turn-around, meeting PCI 2.2's 10 ns turnaround requirement without added logic. | Use Scenario: Interfacing PLC CPU modules with distributed digital I/O cards via parallel backplane wiring. IC Role / Device Role / Timing Role: Robust bus driver handling EMI-prone 24 V industrial environments with latch-up protection and wide temp range. Use Value: JESD78 >500 mA latch-up immunity and −40 °C to +85 °C rating ensure reliability in uncontrolled cabinet temperatures and voltage transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74ABT240D | Identical electrical and functional specification; same pinout and 30 Ω termination; only differs in part numbering convention per industry standardization. | No functional or layout impact; fully interchangeable in existing designs. | Select when sourcing flexibility is needed or when cross-referencing legacy 74ABT240D BOMs. |
| SN74ABT2240DBR | TI variant with identical SOIC-20 package, same 30 Ω termination, and matching AC/DC specs; minor differences in ESD ratings (TI: 2 kV HBM vs. NXP: 2 kV MIL-STD). | Valid for drop-in replacement where TI-sourced components are preferred in supply chain strategy. | Verify ESD test method alignment if operating in high-static environments; otherwise, direct substitution is supported. |
Compared with 74ABT2240D, the 74ABT240D is functionally identical and requires no design changes, while the SN74ABT2240DBR offers equivalent performance with TI-specific qualification-making both viable for continuity planning without compromising timing, drive strength, or termination behavior.
Availability
74ABT2240D is available at Aetrix Electronics and suitable for memory address drivers, clock distribution networks, and industrial I/O expansion requiring stable component supply across extended product lifecycles.
Supply support for 74ABT2240D 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
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications.
The 74ABT2240D belongs to the ABT (Advanced BiCMOS Technology) logic family, engineered for high-speed, low-power 5 V TTL-compatible bus interfacing in mission-critical industrial control and communications infrastructure.
FAQ
What is the exact function of the 74ABT2240D?
The 74ABT2240D is an octal inverting 3-state buffer with dual independent output-enable inputs (1OE and 2OE), each controlling four outputs. It inverts input signals (A0–A3) and drives them onto Y0–Y3 outputs with built-in 30 Ω series termination. All functionality is confirmed in the Philips/NXP 2005 datasheet Rev. 04. The 74ABT2240D operates at 4.5–5.5 V and supports −40 °C to +85 °C ambient conditions.
Does the 74ABT2240D require external termination resistors?
No, the 74ABT2240D does not require external termination resistors. It integrates 30 Ω series resistance in both the HIGH and LOW output states, explicitly designed to match common PCB trace impedances and suppress ringing. This feature is documented in the General Description and Features sections of the official datasheet for the 74ABT2240D.
Is the 74ABT2240D pin-compatible with the 74ABT240D?
Yes, the 74ABT2240D is pin-compatible and functionally identical to the 74ABT240D. The datasheet states: "The 74ABT2240 is the same as the 74ABT240. The part number has been changed to reflect industry standards." Both share identical pinout, electrical characteristics, and SO20 (SOT163-1) packaging-enabling direct substitution without layout modification.
What is the maximum output current capability of the 74ABT2240D?
The 74ABT2240D delivers −32 mA output source current (IOH) and 12 mA sink current (IOL) under recommended operating conditions. These values are specified in Table 6 (Recommended Operating Conditions) and verified in Table 7 (Static Characteristics) of the 74ABT2240D datasheet, confirming its ability to drive heavy TTL loads directly.
How does the 74ABT2240D handle power-up sequencing?
The 74ABT2240D features power-up 3-state behavior: outputs remain in high-impedance mode until VCC reaches a valid operating level, preventing bus contention during power ramp. This is explicitly listed as a key feature and confirmed in the Functional Description section of the 74ABT2240D datasheet, ensuring safe initialization in systems with asynchronous power rails.
74ABT2240D,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74ABT
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 32mA, 12mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
74ABT2240D,112 FAQ
1.How can I place an order for 74ABT2240D,112 through Aetrix?
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6.How does Aetrix verify that 74ABT2240D,112 is sourced from the original manufacturer or authorized distributors?
All 74ABT2240D,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 74ABT2240D,112 meets industry standards.
7.What is the process for return or replacement of 74ABT2240D,112?
All 74ABT2240D,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74ABT2240D,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 74ABT2240D,112 part is unused and in its original packaging.
Return procedure for 74ABT2240D,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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