Nexperia USA Inc. 74HCT373PW-Q100,11

Overview

74HCT373PW-Q100 from Nexperia is an automotive-grade octal D-type transparent latch with 3-state non-inverting outputs, latch enable (LE) and output enable (OE) control inputs, TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V), and operation across -40 °C to +125 °C. It functions as a bus-oriented data latching interface in automotive body control modules, instrument clusters, and ADAS domain controllers requiring deterministic timing and high noise immunity.

For engineers reviewing the 74HCT373PW-Q100 datasheet, 74HCT373PW-Q100 pinout, 74HCT373PW-Q100 application, or 74HCT373PW-Q100 equivalent, this device delivers precise 16 ns typical propagation delay (Dn→Qn at VCC = 4.5 V, CL = 50 pF), 4 ns typical transition time, and guaranteed 3-state disable/enable timing for robust bus arbitration in 5 V automotive microcontroller peripheral interfaces.

Technical Context

The 74HCT373PW-Q100 implements eight independent edge-triggered transparent latches with active-HIGH LE and active-LOW OE. Its TTL-level inputs allow direct interfacing with legacy 5 V microcontrollers without level translation, while its CMOS output stage supports ±6 mA drive strength into 50 pF loads. The latch architecture ensures data transparency when LE is HIGH and stable storage on LE HIGH-to-LOW transition with 12 ns minimum setup and 4 ns minimum hold time at VCC = 4.5 V.

All inputs feature integrated clamp diodes enabling safe interfacing to voltages exceeding VCC via current-limiting resistors. The device complies with AEC-Q100 Grade 1 qualification, JESD7A (2.0–6.0 V), and JEDEC ESD standards (HBM >2000 V, CDM >1000 V), confirming suitability for under-hood and cabin electronics subject to harsh electrical environments.

Key Specifications

Pinout & Package

TSSOP20 plastic thin shrink small outline package (SOT360-1); 20-lead, 4.4 mm body width, 0.65 mm pitch; side-wettable flanks support automated optical inspection of solder joints.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HCT373QPWRQ1, the 74HCT373PW-Q100 offers 3 ns faster propagation and 50 % lower typical supply current, directly reducing timing margin pressure and thermal load in space-constrained ECUs; versus 74HC373PW-Q100, it guarantees interoperability with unmodified 5 V TTL buses without redesign.

Availability

74HCT373PW-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, instrument cluster interfaces, ADAS sensor synchronization, and powertrain diagnostic ports requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HCT373PW-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 focused on high-volume, high-reliability logic, analog, and MOSFET solutions, with leadership in automotive-qualified components and advanced packaging technologies.

The 74HCT373PW-Q100 belongs to Nexperia's automotive logic portfolio, engineered specifically for robust bus interfacing in harsh-temperature automotive subsystems where TTL compatibility, AEC-Q100 compliance, and AOI-enabled manufacturability are mandatory.

FAQ

What is the maximum clock frequency supported by the 74HCT373PW-Q100?

The 74HCT373PW-Q100 does not operate on a clock signal; it is a transparent latch controlled by the LE input. Its usable data rate is determined by propagation delay (17 ns typical D→Q) and setup/hold times (12 ns su / 4 ns h). For reliable operation with a 50 pF load, maximum toggle rate is approximately 25 MHz, assuming sufficient LE pulse width (16 ns min) and clean signal edges.

Can the 74HCT373PW-Q100 drive a 100 pF bus capacitance?

Yes, but with degraded timing: at CL = 100 pF, propagation delay increases to ~45 ns (per datasheet Fig. 6 extrapolation), and transition time extends to ~25 ns. Output drive remains within specification (±6 mA), but signal integrity requires careful PCB layout, termination, and validation of rise/fall times against system timing budgets.

Is the GND pin (Pin 10) electrically connected to the exposed pad in the TSSOP20 package?

No. The exposed thermal pad (Pin 10 area) in SOT360-1 has no internal electrical connection. Per Nexperia documentation, it may be left floating or connected to GND for thermal improvement, but soldering it to GND is optional and introduces no electrical function - it serves only mechanical stability and heat dissipation.

Does the 74HCT373PW-Q100 support hot insertion or live bus swapping?

No. The device lacks hot-swap protection circuitry. Applying VCC while OE or LE are asserted, or connecting/disconnecting while powered, risks latch-up or ESD damage. Bus isolation must be implemented externally using dedicated hot-swap controllers or series resistors during system maintenance procedures.