NXP Semiconductors 74ABT827PW,112

Overview

74ABT827PW,112 from NXP Semiconductors is a 10-bit non-inverting 3-state buffer/line driver in TSSOP24 package, delivering +64 mA sink and −32 mA source output drive with 1.1 ns typical propagation delay (tPLH/tPHL) at 5 V. It features dual NOR-type output enables (OE0, OE1), flow-through pinout for microprocessor bus interfacing, and operates across −40 °C to +85 °C for wide data/address path buffering.

For engineers reviewing the 74ABT827PW,112 datasheet, 74ABT827PW,112 pinout, 74ABT827PW,112 application, or 74ABT827PW,112 equivalent, key selection criteria include 3-state control flexibility, high-output-drive capability for heavy bus loading, low-input capacitance (4 pF), power-up 3-state behavior, and compatibility with 5 V TTL/CMOS logic systems.

Technical Context

The 74ABT827PW,112 implements BiCMOS technology to achieve simultaneous low static current (0.5 µA typical ICC in disabled state) and high-speed switching, with tPZH/tPLZ enable/disable delays under 6 ns. Its dual active-low output enables allow independent control of two 5-bit sub-banks or coordinated 10-bit operation.

Functional behavior follows a strict truth table: outputs Y0–Y9 pass inputs A0–A9 transparently when either OE0 or OE1 is LOW; all outputs enter high-impedance (Z) when both enables are HIGH. Inputs remain functional during 3-state mode, but outputs are electrically isolated.

Key Specifications

Pinout & Package

TSSOP24 package (SOT355-1): plastic thin shrink small outline, 24 leads, 4.4 mm body width, 0.65 mm lead pitch, 1.1 mm max height.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74ABT244NSR and 74LVT162244MTD, the 74ABT827PW,112 uniquely delivers exact 10-bit width with dual 5-bit enables in a 5 V system, avoiding redesign for partial-width substitution or voltage translation overhead.

Availability

74ABT827PW,112 is available at Aetrix Electronics and suitable for industrial control systems, legacy computing upgrades, and high-reliability test instrumentation requiring stable component supply and long-term obsolescence management.

Supply support for 74ABT827PW,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 74ABT827PW,112 belongs to NXP's ABT-series advanced bipolar transistor-transistor logic family, engineered for high-speed, low-power bus interface applications in industrial and computing environments.

FAQ

What is the maximum operating frequency supported by the 74ABT827PW,112?

The 74ABT827PW,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 (max 4.8 ns An→Yn) and system setup/hold timing. In practice, it reliably supports 100+ MHz data toggling on well-terminated 50 Ω traces with proper decoupling. The 74ABT827PW,112 is optimized for asynchronous bus buffering rather than synchronous clock distribution.

Does the 74ABT827PW,112 support mixed-voltage operation (e.g., 3.3 V inputs with 5 V supply)?

No. The 74ABT827PW,112 requires VIH ≥ 2.0 V and VIL ≤ 0.8 V relative to its VCC (4.5–5.5 V). Applying 3.3 V logic inputs directly risks violating the minimum VIH specification at low VCC (e.g., 4.5 V), potentially causing undefined output states. For mixed-voltage systems, level-shifting circuitry or a 3.3 V–compatible buffer like 74LVT244 must be used. The 74ABT827PW,112 is strictly a 5 V-only interface device.

How does the dual output enable (OE0 and OE1) function in the 74ABT827PW,112?

In the 74ABT827PW,112, OE0 controls outputs Y0–Y4 and OE1 controls Y5–Y9. Either enable LOW activates its respective 5-bit group; both HIGH places all ten outputs in high-impedance. This allows independent gating of address nibbles or data segments without external logic. The 74ABT827PW,112 does not require both enables to be asserted simultaneously-partial enable is fully supported and electrically safe.

Is the 74ABT827PW,112 pin-compatible with other packages in the 74ABT827 family?

Yes-the 74ABT827PW,112 (TSSOP24), 74ABT827D (SO24), and 74ABT827DB (SSOP24) share identical pinouts per SOT355-1/SOT137-1/SOT340-1 outlines. All three use the same 24-pin numbering scheme: OE0 (pin 1), A0–A9 (pins 2–11), GND (12), OE1 (13), Y9–Y0 (14–23), VCC (24). Mechanical dimensions differ, but PCB layout can be reused with land pattern adaptation.

What thermal considerations apply to the 74ABT827PW,112 under full output loading?

Under worst-case conditions (all outputs sinking 64 mA each at VOL = 0.55 V), total power dissipation reaches ~350 mW. With θJA ≈ 120 °C/W for TSSOP24 on 2-layer board, junction temperature rise is ~42 °C above ambient. At +85 °C ambient, TJ ≈ 127 °C-within the 150 °C absolute max. Adequate copper pour and airflow are recommended for sustained 100% load. The 74ABT827PW,112 includes latch-up protection exceeding 500 mA, safeguarding against thermal runaway.