Nexperia USA Inc. 74HC244PW-Q100,118

Overview

74HC244PW-Q100 from Nexperia is an automotive-grade octal non-inverting 3-state buffer/line driver in TSSOP20 package, operating from 2.0 V to 6.0 V supply, featuring dual independent output enables (1OE, 2OE), CMOS-level inputs, and -40 °C to +125 °C temperature range - used for bidirectional bus interfacing in engine control units and ADAS domain controllers.

For engineers reviewing the 74HC244PW-Q100 datasheet, 74HC244PW-Q100 pinout, 74HC244PW-Q100 application, or 74HC244PW-Q100 equivalent, key selection criteria include 3-state timing (t_en = 10–38 ns, t_dis = 11–38 ns at V_CC = 4.5–6.0 V), AEC-Q100 Grade 1 qualification, input clamp diodes for overvoltage-tolerant interfacing, and dual 4-bit enable control for segmented bus isolation.

Technical Context

This device implements two independent 4-bit non-inverting buffer sections, each controlled by a dedicated active-low output enable (1OE for Y0–Y3, 2OE for Y0'–Y3'), enabling selective bus driving without contention. The CMOS input structure provides high noise immunity (typ. 40% V_CC noise margin) and supports TTL-compatible operation only in the 74HCT variant - not applicable here.

All eight outputs enter high-impedance state when their respective OE is HIGH; inputs tolerate voltages beyond V_CC via integrated clamp diodes, allowing safe interface with higher-voltage logic domains using external current-limiting resistors. Propagation delay ranges from 9 ns (V_CC = 6.0 V, CL = 15 pF) to 165 ns (V_CC = 2.0 V).

Key Specifications

Pinout & Package

TSSOP20 package (SOT360-1): 20-pin thin shrink small outline, 4.4 mm body width, 0.65 mm pitch, exposed pad optional for thermal enhancement.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal 3-state buffer applications.

Compared with 74HCT244PW-Q100, this HC variant supports wider supply range and overvoltage-tolerant inputs; versus SN74LVC244APWRQ1, it trades lower voltage operation for built-in clamping and broader compatibility with legacy automotive subsystems.

Availability

74HC244PW-Q100 is available at Aetrix Electronics and suitable for engine control units, ADAS camera interfaces, infotainment display drivers, and body control modules requiring stable component supply across automotive production lifecycles.

Supply support for 74HC244PW-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 efficiency.

The 74HC-Q100 series delivers AEC-Q100-qualified standard logic devices engineered specifically for automotive signal integrity, thermal resilience, and long-term supply stability in safety-critical electronic control units.

FAQ

Is 74HC244PW-Q100 pin-compatible with non-automotive 74HC244 variants?

Yes - the PW (TSSOP20) package and pin assignment match industry-standard 74HC244 devices. However, the Q100 suffix denotes AEC-Q100 qualification, extended temperature range (-40 °C to +125 °C), and automotive-specific reliability testing; electrical specs align with HC family but include tighter parametric screening and lot traceability.

Can 74HC244PW-Q100 drive a 50 Ω transmission line directly?

No - its ±7.8 mA output drive at V_CC = 4.5 V yields ~575 Ω source impedance, insufficient for 50 Ω matching. It can drive short PCB traces (<5 cm) or capacitive loads ≤15 pF. For 50 Ω lines, use a dedicated line driver (e.g., SN65LVDS1) or add series termination.

What is the maximum clock frequency supported for data latching?

The device is not a clocked register but a transparent buffer. Its usable data rate depends on propagation delay and system setup/hold margins. With t_pd = 9 ns (V_CC = 6.0 V), maximum reliable toggle rate is ~55 MHz for non-critical timing; for synchronous interfaces, limit to ≤20 MHz to accommodate board trace delays and noise margins.

Does the GND pad on the TSSOP20 package require soldering?

No - the exposed pad (pin 10) is electrically connected to GND but has no mechanical requirement for soldering. If soldered, it must remain floating or tied to system ground; improper grounding may cause thermal stress or signal integrity issues due to parasitic coupling.