NXP Semiconductors 74ABT2240N,112

Overview

74ABT2240N,112 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 inputs (1OE and 2OE), ±32 mA/12 mA drive capability, and propagation delays as low as 2.8 ns (tPLH) at 5 V. It is widely used in memory address drivers, clock distribution networks, and bidirectional bus transceivers.

For engineers reviewing the 74ABT2240N,112 datasheet, 74ABT2240N,112 pinout, 74ABT2240N,112 application, or 74ABT2240N,112 equivalent, key selection criteria include its built-in 30 Ω series termination (eliminating external resistors), live-insertion capability, power-up 3-state behavior, and compatibility with ABT-family timing and logic levels in industrial and telecom backplane interfaces.

Technical Context

The 74ABT2240N,112 implements a BiCMOS architecture that combines bipolar speed with CMOS low static power, enabling sub-5 ns propagation delays while maintaining quiescent current below 50 µA. Its dual 3-state control (1OE/2OE) independently gates two groups of four inverted outputs, supporting segmented bus management.

Each output integrates matched 30 Ω series resistance in both HIGH and LOW states-verified per datasheet Figure 3 and Table 7-reducing ringing and EMI without requiring external termination. The device operates across −40 °C to +85 °C with 4.5–5.5 V supply and meets JESD78 latch-up immunity (>500 mA) and MIL-STD-883 ESD robustness (>2000 V).

Key Specifications

Pinout & Package

DIP20 package (SOT146-1): 20-pin plastic dual in-line package, 300 mil width, through-hole mounting, 2.54 mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal inverting buffer applications.

Compared with 74ABT2240N,112, the 74ABT240N,112 offers identical performance and pin compatibility, while SN74ABT2240N provides second-source availability with matching dynamic characteristics but separate qualification history-both require no PCB changes if footprint tolerances accommodate minor package dimensional variances.

Availability

74ABT2240N,112 is available at Aetrix Electronics and suitable for memory subsystems, clock distribution networks, and industrial backplane interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74ABT2240N,112 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, with roots in Philips' semiconductor division.

The 74ABT2240N,112 belongs to NXP's ABT (Advanced BiCMOS Technology) logic family, engineered for high-speed, low-noise bus interface applications in mission-critical industrial and telecom infrastructure.

FAQ

What is the function of the 74ABT2240N,112?

The 74ABT2240N,112 is an octal inverting 3-state buffer with dual output-enable inputs and integrated 30 Ω series termination on all outputs. It functions as a high-speed bus driver that inverts input signals and places outputs in high-impedance state when enabled is deasserted. Its design targets noise-sensitive applications like memory addressing and clock distribution where signal integrity is critical.

Does the 74ABT2240N,112 require external termination resistors?

No, the 74ABT2240N,112 does not require external termination resistors. Each output incorporates a precisely matched 30 Ω series resistor in both HIGH and LOW states, as confirmed in the Philips datasheet Section 1 and Table 7. This feature eliminates the need for discrete 33 Ω resistors on PCB traces, reducing component count and layout complexity while suppressing line noise.

What is the operating temperature range of the 74ABT2240N,112?

74ABT2240N,112 is rated for operation from −40 °C to +85 °C, as specified in Table 2 (Ordering Information) and Table 6 (Recommended Operating Conditions). This industrial-grade temperature range supports deployment in harsh environments such as factory automation controllers, telecom base station boards, and outdoor embedded systems without derating.

Is the 74ABT2240N,112 pin-compatible with the 74ABT240N,112?

Yes, the 74ABT2240N,112 is functionally and pin-compatible with the 74ABT240N,112. Per Section 1 of the datasheet, "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 package options-including DIP20 (SOT146-1) for the 74ABT2240N,112.

What are the key timing parameters of the 74ABT2240N,112 at 5 V?

At VCC = 5 V and CL = 50 pF, the 74ABT2240N,112 delivers tPLH = 2.8 ns (typ.), tPHL = 4.3 ns (typ.), tPZH = 3.4 ns (typ.), and tPLZ = 3.4 ns (typ.) as documented in Table 8. These values enable reliable operation in systems with clock periods down to ~10 ns, making it suitable for high-speed address latching and clock fanout in legacy and mixed-voltage designs.