NXP Semiconductors 74ABT827DB,118

Overview

74ABT827DB,118 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, and operates across −40 °C to +85 °C. It is used in microprocessor bus systems requiring flow-through pinout and light loading.

For engineers reviewing the 74ABT827DB,118 datasheet, 74ABT827DB,118 pinout, 74ABT827DB,118 application, or 74ABT827DB,118 equivalent, key selection criteria include 3-state control flexibility, 4.5–5.5 V supply compatibility, sub-5 ns propagation delay, and latch-up immunity exceeding 500 mA per JESD78B Class II Level A.

Technical Context

The 74ABT827DB,118 implements BiCMOS logic architecture to achieve low static/dynamic power with high speed and strong drive capability. Its dual active-low output enables (OE0, OE1) allow independent or combined 3-state control of all ten outputs, supporting flexible bus arbitration and multi-drop configurations.

It supports transparent operation when either enable is asserted (LOW), placing outputs in high-impedance state only when both enables are HIGH. Input clamping voltage is −1.2 V at −18 mA, and power-up 3-state ensures defined output states during supply ramp-up.

Key Specifications

Pinout & Package

74ABT827DB,118 is housed in a plastic shrink small outline package (SSOP24) with 24 leads, body width 5.3 mm (SOT340-1). Pin pitch is 0.65 mm, and package height is 1.80 mm max.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74ABT244NSR and 74LVT125PW,118, the 74ABT827DB,118 uniquely delivers 10-bit width in a single SSOP24 package with full 5 V operation and asymmetric drive - making it optimal for legacy industrial bus upgrades where pin count, voltage, and layout continuity are critical.

Availability

74ABT827DB,118 is available at Aetrix Electronics and suitable for industrial control systems, telecom infrastructure backplanes, and embedded microprocessor bus expansion requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for 74ABT827DB,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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The 74ABT827DB,118 belongs to NXP's ABT-series advanced BiCMOS logic family, engineered for high-speed, low-power 5 V bus interfacing in industrial and computing systems where reliability and timing precision are essential.

FAQ

What is the maximum operating frequency supported by the 74ABT827DB,118?

The 74ABT827DB,118 does not specify a maximum clock frequency but achieves typical propagation delays of 2.9–3.0 ns (tPHL/tPLH) at 5.0 V. Based on these values, it reliably supports bus data rates up to 200 MHz in well-terminated, low-skew layouts. System-level timing must account for board trace delays and load capacitance, but the 74ABT827DB,118 itself imposes no hard frequency ceiling beyond its sub-5 ns delay specification.

Does the 74ABT827DB,118 support mixed-voltage operation (e.g., 3.3 V inputs with 5 V supply)?

Yes - the 74ABT827DB,118 accepts input voltages from −1.2 V to +7.0 V regardless of VCC (4.5–5.5 V), enabling safe interfacing with 3.3 V logic families without external level shifters. Its VIH (≥2.0 V) and VIL (≤0.8 V) thresholds are compatible with 3.3 V CMOS/TTL swing, and input clamping protects against overshoot.

How does the dual output enable (OE0 and OE1) function in the 74ABT827DB,118?

In the 74ABT827DB,118, both OE0 (pin 1) and OE1 (pin 13) are active-low inputs. Outputs Y0–Y9 enter high-impedance state only when both enables are HIGH. If either OE0 or OE1 is LOW, all outputs are enabled and follow their respective A inputs. This NOR logic allows flexible control - e.g., OE0 for local device control and OE1 for global bus reset.

Is the 74ABT827DB,118 pin-compatible with other packages in the 74ABT827 family?

Yes - the 74ABT827DB,118 (SSOP24/SOT340-1), 74ABT827D (SO24/SOT137-1), and 74ABT827PW (TSSOP24/SOT355-1) share identical pin numbering and electrical functionality. Mechanical dimensions differ, but PCB layout can reuse the same footprint logic; only land pattern and solder mask must be adapted per package variant.

What thermal considerations apply to the 74ABT827DB,118 under full output loading?

Under worst-case conditions (all outputs sinking 64 mA each at 5.5 V), total power dissipation may approach 350 mW. The 74ABT827DB,118 has a maximum junction temperature of 150 °C. With typical θJA ≈ 120 °C/W for SSOP24 on 2-layer boards, ambient must remain below ~105 °C. For sustained high-drive operation, use copper pour and thermal vias under the exposed pad (if present) - though SOT340-1 lacks an exposed pad, so airflow or adjacent copper area is critical.