Nexperia USA Inc. 74LVCH244ADB-Q100J

Overview

74LVCH244ADB-Q100 from Nexperia is an automotive-grade octal non-inverting 3-state buffer/line driver with bus hold on all data inputs, 1.2 V to 3.6 V supply operation, 5.5 V tolerant inputs, and -40 °C to +125 °C temperature range. It enables level translation between 3.3 V and 5 V logic domains in automotive body control modules and infotainment interfaces.

For engineers reviewing the 74LVCH244ADB-Q100 datasheet, 74LVCH244ADB-Q100 pinout, 74LVCH244ADB-Q100 application, or 74LVCH244ADB-Q100 equivalent, key selection criteria include bus hold functionality, AEC-Q100 Grade 1 qualification, 3-state timing (tpd ≤ 7.5 ns at 3.3 V), 5.5 V input tolerance, and SSOP20 package compatibility with automated optical inspection.

Technical Context

This device implements dual 4-bit non-inverting buffers with independent active-low 3-state enable controls (1OE, 2OE), Schmitt-trigger inputs for noise immunity, and integrated bus hold circuitry on all eight data inputs-eliminating external pull-ups. The bus hold sustains logic states with ±75 μA at 3.0 V while allowing 5.5 V inputs when VI > VCC.

It operates across a wide VCC range (1.2–3.6 V) and supports mixed-voltage interfacing: inputs accept 0–5.5 V regardless of supply, and outputs drive 5 V-tolerant loads in 3-state mode. Propagation delay is specified down to 1.5 ns (typical) at 3.3 V, with enable/disable times ≤9.5 ns and output skew ≤1.5 ns.

Key Specifications

Pinout & Package

74LVCH244ADB-Q100 uses the SOT339-1 (SSOP20) package: 20-pin shrink small outline package, 0.65 mm pitch, 7.2 mm × 5.3 mm body, 1.0 mm max height, with gull-wing leads suitable for reflow and AOI.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVCH244APW-Q100 and SN74LVC244AQDRQ1, the 74LVCH244ADB-Q100 uniquely combines SSOP20 form factor, full bus hold on all data inputs, 1.2 V minimum VCC, and side-wettable flank compatibility - making it optimal for space-constrained, high-reliability automotive modules requiring zero-external-bias I/O management.

Availability

74LVCH244ADB-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, instrument cluster interfaces, ADAS sensor hubs, and infotainment system expansion requiring stable component supply across extended temperature ranges.

Supply support for 74LVCH244ADB-Q100 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 delivering high-performance logic, discrete, and MOSFET solutions optimized for automotive, industrial, and mobile applications with emphasis on reliability and energy efficiency.

The 74LVCH244ADB-Q100 belongs to Nexperia's automotive-qualified LVC/LVCH logic family, designed specifically for robust signal buffering and level translation in harsh-temperature vehicle subsystems where bus stability and ESD resilience are critical.

FAQ

Does 74LVCH244ADB-Q100 support 1.2 V operation with full timing guarantees?

Yes. The device is fully characterized from 1.2 V to 3.6 V, with propagation delay guaranteed ≤17.0 ns at 1.2 V and -40 °C to +85 °C. At 1.2 V, static parameters including VIH/VIL and VOH/VOL meet JEDEC JESD8-7A specifications, enabling use in ultra-low-power automotive sub-systems such as smart junction boxes.

How does the bus hold function interact with 5.5 V inputs?

The bus hold circuit automatically disables when any data input exceeds VCC, allowing safe 5.5 V application without damage or contention. While disabled, the input behaves as a standard CMOS gate with ±0.1 μA leakage. Bus hold re-engages only when VI drops below VCC, ensuring seamless mixed-voltage operation without external intervention.

What is the maximum capacitive load this device can drive reliably?

Per Nexperia's test conditions in Table 9, the device drives up to 50 pF load capacitance with guaranteed timing (tpd ≤7.5 ns at 3.3 V). For heavier loads (>50 pF), propagation delay increases linearly; at 100 pF, typical tpd rises to ~11 ns. Layout best practice recommends keeping trace capacitance <15 pF and using series termination for >75 pF loads.

Is the SSOP20 (SOT339-1) package compatible with standard reflow profiles?

Yes. The SOT339-1 package is qualified for IPC/JEDEC J-STD-020D moisture sensitivity level 1 and supports peak reflow temperatures up to 260 °C for 30 seconds. Its gull-wing leads ensure reliable solder joint formation under standard lead-free reflow profiles, and side-wettable flanks enable post-reflow AOI verification of solder fillet integrity.