Nexperia USA Inc. HEF40098BT,652

Overview

HEF40098BT,652 from Nexperia is a hex inverting buffer with dual 3-state enable control (1OE and 2OE), delivering six active-low buffered outputs across two independent groups (1Y0–1Y3 and 2Y0–2Y1). It operates from 3 V to 15 V over −40 °C to +85 °C, features symmetrical output drive (±24 mA at 15 V), and supports static CMOS logic interfacing in bus isolation and level translation applications.

For engineers reviewing the HEF40098BT,652 datasheet, HEF40098BT,652 pinout, HEF40098BT,652 application, or HEF40098BT,652 equivalent, key selection criteria include its dual-group 3-state architecture, wide VDD range (3–15 V), guaranteed VIH/VIL thresholds per supply voltage, propagation delays down to 22 ns (15 V), and SO16 package compatibility with legacy 4000-series layouts.

Technical Context

The HEF40098BT,652 implements two independent 3-state inverting buffer sections: four outputs (1Y0–1Y3) are enabled by 1OE (active LOW), and two outputs (2Y0–2Y1) by 2OE (active LOW). Each output drives LOW when its input is HIGH, with high-impedance state asserted independently per group.

It uses standard CMOS silicon process with fully static operation, JEDEC JESD13-B compliance, and input clamping diodes. Unused inputs must be tied to VDD, VSS, or another driven input to prevent floating states and ensure predictable DC behavior.

Key Specifications

Pinout & Package

HEF40098BT,652 is housed in a plastic small outline package (SO16), SOT109-1, with 16 leads and 3.9 mm body width. Pin 1 is marked by a notch or dot; pin numbering follows standard SOIC convention (counterclockwise from top-left corner).

Key Features

Applications

Equivalent & Alternatives

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

Compared with CD4009BE and SN74HC04N, the HEF40098BT,652 uniquely delivers dual independent 3-state control, higher drive capability (24 mA), and wider supply range (3–15 V), making it the only option among the three capable of flexible bus segmentation and mixed-voltage interfacing without supplemental components.

Availability

HEF40098BT,652 is available at Aetrix Electronics and suitable for industrial bus isolation, legacy system interface, programmable logic expansion, and test equipment signal conditioning requiring stable component supply and long-term manufacturing continuity.

Supply support for HEF40098BT,652 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 leading semiconductor manufacturer specializing in high-performance logic, analog, and MOSFET solutions, with roots in Philips Semiconductors and a focus on reliability and industrial-grade qualification.

The HEF40098BT,652 belongs to Nexperia's legacy 4000-series logic family, designed for robustness in industrial control, instrumentation, and mixed-voltage system interfacing where wide supply range and deterministic 3-state behavior are essential.

FAQ

What is the maximum capacitive load the HEF40098BT,652 can drive while maintaining specified timing?

The HEF40098BT,652 is characterized up to 50 pF load capacitance in dynamic testing (Table 10). At 15 V, tPHL remains ≤50 ns and tTHL ≤20 ns under these conditions. Driving >50 pF may increase propagation and transition times nonlinearly; for loads exceeding 50 pF, add series termination or verify timing margins with actual board parasitics.

Can unused inputs be left floating?

No. Unused inputs must be tied to VDD, VSS, or another driven input. Floating CMOS inputs cause increased supply current, unpredictable output states, and potential device latch-up due to intermediate voltage levels triggering both NMOS and PMOS transistors simultaneously.

Does the HEF40098BT,652 support hot insertion or live bus connection?

No. The HEF40098BT,652 lacks hot-swap protection circuitry such as power-up sequencing control, I/O clamp diodes rated for sustained overvoltage, or slew-rate limiting. Connecting it to a live bus risks exceeding absolute maximum ratings (e.g., VI > VDD + 0.5 V), potentially damaging the device.

How does the dual OE architecture improve system-level design compared to single-OE buffers?

The dual OE (1OE and 2OE) allows independent control of two functional signal groups - for example, isolating data lines (1Y0–1Y3) while keeping control/status lines (2Y0–2Y1) active. This eliminates the need for additional logic gates or multiplexers to achieve granular bus management, reducing component count and PCB area in space-constrained industrial modules.