Nexperia USA Inc. 74LVCH244APW,118

Overview

74LVCH244APW,118 from Nexperia is an octal 3-state buffer/line driver with bus hold on all data inputs, operating from 1.2 V to 3.6 V supply, supporting mixed-voltage translation (3.3 V ↔ 5 V), and rated for -40 °C to +125 °C. It features dual independent output enables (1OE, 2OE), Schmitt-trigger inputs for noise immunity, and IOFF circuitry for partial power-down protection.

For engineers reviewing the 74LVCH244APW,118 datasheet, 74LVCH244APW,118 pinout, 74LVCH244APW,118 application, or 74LVCH244APW,118 equivalent, this device is selected for high-reliability bus interfacing in industrial control backplanes, FPGA I/O expansion, and automotive body electronics where voltage-level translation, input noise tolerance, and power-down isolation are critical.

Technical Context

The 74LVCH244APW,118 implements two independent 4-bit buffered paths, each controlled by its own active-low output enable (1OE for Y0–Y3, 2OE for Y0'–Y3'). Its Schmitt-trigger inputs accept slow-rising signals and tolerate overvoltage up to 5.5 V, enabling robust interfacing across voltage domains.

IOFF circuitry disables outputs when VCC = 0 V, preventing backflow current during hot insertion or partial system shutdown. Bus hold functionality maintains valid logic states on all eight data inputs without external pull resistors-exclusive to the LVCH variant and confirmed for -40 °C to +125 °C operation.

Key Specifications

Pinout & Package

TSSOP20 package (SOT360-1): 20-pin thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVC244APW,118 and SN74LVC244APWR, the 74LVCH244APW,118 uniquely delivers integrated bus hold-reducing external component count-while maintaining identical TSSOP20 packaging, timing, and thermal performance across -40 °C to +125 °C.

Availability

74LVCH244APW,118 is available at Aetrix Electronics and suitable for industrial PLC backplane interfaces, FPGA I/O expansion modules, automotive body control units, and test equipment signal conditioning requiring stable component supply across extended temperature ranges.

Supply support for 74LVCH244APW,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

Nexperia is a global semiconductor expert delivering high-performance, reliable logic, analog, and MOSFET solutions optimized for efficiency, miniaturization, and robustness in high-volume applications.

The 74LVCH244APW,118 belongs to Nexperia's LVC/LVCH advanced logic family, engineered for low-voltage, mixed-signal interfacing in automotive, industrial, and computing systems demanding voltage translation, noise immunity, and power-down safety.

FAQ

Does the 74LVCH244APW,118 support true bidirectional data flow?

No. The 74LVCH244APW,118 is a unidirectional octal buffer: inputs (A0–A3, A0'–A3') drive corresponding outputs (Y0–Y3, Y0'–Y3'). It lacks internal direction control or bus transceiver architecture. For bidirectional operation, discrete control logic or dedicated transceivers like the 74LVC245 are required.

Can 1OE and 2OE be tied together for single-enable operation?

Yes. Pins 1 (1OE) and 19 (2OE) may be connected to a common enable signal. This configures the device as an 8-bit buffer with unified 3-state control. Electrical loading remains within specification, and propagation delay symmetry is preserved per datasheet Table 7.

What is the maximum capacitive load the outputs can drive reliably?

The outputs are characterized up to 50 pF (per Table 9 test conditions). Driving >50 pF increases propagation delay and may cause overshoot/ringing. For loads >50 pF, add series termination or reduce slew rate via external RC; CPD = 12.5 pF (VCC = 3.0–3.6 V) defines dynamic power contribution.

Is bus hold active on the output enable (OE) pins?

No. Bus hold is implemented only on data input pins (1A0–1A3, 2A0–2A3), as explicitly stated in Section 9 footnote [3]. OE pins (1, 19) have standard CMOS input structure and require external pull-up/pull-down if floating during power-up or reset.