NXP Semiconductors 74ABT08PW,118

Overview

74ABT08PW from Nexperia is a quad 2-input AND gate in TSSOP14 package, operating from 4.5 V to 5.5 V supply, with propagation delays as low as 1.0 ns (tPLH/tPHL), IOFF-enabled partial power-down protection, and guaranteed operation from –40 °C to +85 °C. It serves as a high-speed logic-level combiner in bus gating, address decoding, and enable control circuits within industrial control and telecom interface modules.

For engineers reviewing the 74ABT08PW datasheet, 74ABT08PW pinout, 74ABT08PW application, or 74ABT08PW equivalent, key selection criteria include its BiCMOS-driven 20 mA sink/output drive, IOFF backflow prevention during power sequencing, sub-4 ns max propagation delay across temperature, and compatibility with TTL input thresholds (VIL ≤ 0.8 V, VIH ≥ 2.0 V).

Technical Context

This device implements four independent AND logic functions using BiCMOS technology to achieve TTL-compatible input thresholds and CMOS-level output swing while delivering 20 mA low-state drive and –15 mA high-state sourcing. Its IOFF circuitry actively disables outputs when VCC = 0 V, limiting power-off leakage to ±100 μA and blocking reverse current flow between powered and unpowered system domains.

The logic behavior follows standard AND truth table (L/X→L, X/L→L, H/H→H), with output skew ≤0.5 ns between any two gates in the same package. All inputs and outputs are rated for 7.0 V absolute maximum, and latch-up immunity exceeds 500 mA per JESD78B Class II Level A.

Key Specifications

Pinout & Package

TSSOP14 package (SOT402-1): 4.4 mm body width, 0.65 mm lead pitch, 1.20 mm max height, JEDEC MO-153 compliant - optimized for high-density PCB layouts and automated SMT placement.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-input AND gate applications.

Compared with SN74ABT08DBR and 74LVC08PW, the 74ABT08PW uniquely combines 5 V operation, IOFF protection, and TSSOP density - making it the sole option for space-constrained industrial 5 V designs requiring safe partial power-down.

Availability

74ABT08PW is available at Aetrix Electronics and suitable for bus enable control, address decoding, power sequencing logic, and signal conditioning interface applications requiring stable component supply, long-term industrial lifecycle support, and consistent TSSOP14 packaging.

Supply support for 74ABT08PW 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, discrete, and MOSFET solutions - founded as part of NXP and spun off in 2017 to specialize in essential semiconductor components.

The 74ABT series targets industrial and telecom infrastructure requiring robust 5 V logic with enhanced speed, drive strength, and power-management features - specifically engineered for systems with mixed-power-domain sequencing and legacy interface compatibility.

FAQ

Does 74ABT08PW support mixed-voltage operation between 3.3 V and 5 V domains?

No - the 74ABT08PW is specified only for 4.5 V to 5.5 V VCC operation. Its inputs are TTL-compatible (VIH ≥ 2.0 V), allowing direct connection to 3.3 V logic outputs, but the device itself must be powered from 5 V. It does not tolerate 3.3 V supply or guarantee performance outside its rated VCC range.

What is the maximum capacitive load the 74ABT08PW can drive while maintaining 4 ns max propagation delay?

Per the datasheet test conditions in Table 8, the 4.0 ns max tPLH/tPHL is guaranteed with CL = 50 pF and RL = 500 Ω. Driving >50 pF increases delay nonlinearly; for 100 pF loads, measured delay exceeds 5.5 ns. Use a buffer stage or reduce trace capacitance for heavier loads.

How does the IOFF feature behave when VCC is ramping during power-up?

IOFF activates when VCC falls below ~0.5 V and remains active until VCC rises above ~1.5 V. During power-up, outputs stay in high-Z until VCC crosses the threshold, then resume normal logic function. This prevents metastable or undefined output states during brown-out conditions.

Can 74ABT08PW outputs be safely tied together for wired-AND operation?

No - outputs are push-pull and not designed for wired-logic. Connecting outputs risks contention current, excessive power dissipation, and potential damage. For wired-AND, use open-collector/drain devices or external pull-up resistors with single-output gates.