NXP Semiconductors 74ABT827DB,112

Overview

74ABT827DB,112 from NXP Semiconductors is a 10-bit non-inverting 3-state buffer/line driver in SSOP24 package, designed for high-speed bus interface buffering of wide data or address paths. It features dual NOR-type output enables (OE0, OE1), ±32 mA / +64 mA output drive, flow-through pinout architecture, and operates across −40 °C to +85 °C.

For engineers reviewing the 74ABT827DB,112 datasheet, 74ABT827DB,112 pinout, 74ABT827DB,112 application, or 74ABT827DB,112 equivalent, key selection criteria include 3-state control flexibility, bus loading capability, propagation delay under 4.8 ns, ESD robustness (HBM >2000 V), and compatibility with 5 V TTL logic systems.

Technical Context

The 74ABT827DB,112 implements BiCMOS technology to achieve low static/dynamic power dissipation while delivering high-speed performance. Its dual active-low output enables allow independent control of two 5-bit output groups (Y0–Y4 and Y5–Y9), enabling segmented bus management in microprocessor-oriented architectures.

It supports transparent operation when either enable is asserted (LOW), places outputs in high-impedance state when both enables are HIGH, and incorporates power-up 3-state behavior with input disable during 3-state mode-ensuring clean bus initialization and preventing contention during power sequencing.

Key Specifications

Pinout & Package

74ABT827DB,112 is housed in a plastic shrink small outline package (SSOP24) with 24 leads, 5.3 mm body width, and 0.65 mm lead pitch per SOT340-1 specification.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 10-bit non-inverting 3-state buffer applications.

Compared with SN74ABT827DBR, the 74ABT827DB,112 offers identical functionality and interoperability but differs in manufacturer qualification and supply chain origin; versus 74LVT827DB,112, it provides full 5 V operation and higher drive strength at the cost of higher static current, making it suitable for legacy or mixed-voltage industrial bus systems requiring robust 5 V signaling.

Availability

74ABT827DB,112 is available at Aetrix Electronics and suitable for memory subsystems, microprocessor bus expansion, parity signal conditioning, and industrial backplane interface applications requiring stable component supply and long-term industrial temperature support.

Supply support for 74ABT827DB,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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The 74ABT827DB,112 belongs to NXP's ABT logic family, engineered for high-speed, low-power 5 V TTL-compatible bus interfacing in industrial and computing systems where timing precision and noise immunity are critical.

FAQ

What is the maximum operating frequency supported by the 74ABT827DB,112?

The 74ABT827DB,112 does not specify a maximum clock frequency, as it is a combinational buffer-not a clocked device. Its usable data rate is determined by propagation delay (tPLH/tPHL ≤ 4.8 ns) and system setup/hold timing. In practice, it reliably supports bus data rates up to ~100 MHz in well-designed 5 V TTL systems with controlled trace impedance and load capacitance ≤50 pF.

Does the 74ABT827DB,112 support 3.3 V logic inputs?

No, the 74ABT827DB,112 is designed for 5 V operation only. Its recommended input voltage range is 0 V to VCC (4.5–5.5 V), with VIH ≥ 2.0 V and VIL ≤ 0.8 V. While 3.3 V logic may register as valid HIGH under some conditions, it violates the specified VIH minimum and risks unreliable switching-especially across temperature and voltage tolerances. Use 74LVT827DB,112 for guaranteed 3.3 V compatibility.

How does the dual output enable (OE0 and OE1) function in the 74ABT827DB,112?

In the 74ABT827DB,112, OE0 (pin 1) controls outputs Y0–Y4, and OE1 (pin 13) controls outputs Y5–Y9. Both are active-low: a LOW on either enable activates its respective 5-bit group; a HIGH places those outputs in high-impedance state. When both are HIGH, all ten outputs go high-Z-enabling independent or simultaneous bus segment control without external logic.

Is the 74ABT827DB,112 pin-compatible with other packages in the 74ABT827 series?

Yes-the 74ABT827DB,112 (SSOP24/SOT340-1), 74ABT827D (SO24/SOT137-1), and 74ABT827PW (TSSOP24/SOT355-1) share identical pin numbering, pin functions, and electrical specifications. Mechanical differences (body width: 5.3 mm vs. 7.5 mm vs. 4.4 mm) require separate PCB footprints, but logic design and schematic symbols remain interchangeable across all three packages.

What thermal considerations apply to the 74ABT827DB,112 under full drive conditions?

Under worst-case conditions (all outputs sinking 64 mA each at VCC = 5.5 V), total power dissipation can reach ~3.5 W. The 74ABT827DB,112 has a maximum junction temperature of 150 °C. With typical SSOP24 θJA ≈ 120 °C/W, ambient must be kept below ~105 °C to stay within limit-so derating or board-level thermal management (copper pour, airflow) is required for sustained full-load operation in enclosed industrial enclosures.