Nexperia USA Inc. HEF4028BT,653

Overview

HEF4028BT,653 from Nexperia is a 4-bit BCD-to-decimal decoder IC in SO16 package, operating from 3.0 V to 15.0 V supply, delivering active-HIGH 1-of-10 decoded outputs (Y0–Y9) with propagation delays as low as 30 ns at 15 V, and specified for -40 °C to +85 °C industrial temperature range. It supports BCD decoding, 1-of-8 decoding with active-low enable (A3), and 8-output demultiplexing using A0–A2 as address lines and A3 as data input.

For engineers reviewing the HEF4028BT,653 datasheet, HEF4028BT,653 pinout, HEF4028BT,653 application, or HEF4028BT,653 equivalent, key selection criteria include its wide VDD range (3–15 V), symmetrical CMOS output drive, input clamping diodes enabling overvoltage-tolerant interfacing, and dual-mode operation (BCD decode vs. demux).

Technical Context

The HEF4028BT,653 implements static CMOS logic with fully buffered inputs and outputs, supporting three functional modes: standard 4-bit BCD-to-10-line decoding (A0–A3), 3-bit octal decoding with A3 as active-low enable, and 3-to-8 demultiplexing with A3 as inverted data path. Its architecture includes integrated input clamp diodes, allowing direct interface to voltages exceeding VDD when used with current-limiting resistors.

Operation is fully static with no minimum clock or refresh requirement. Output drive capability is symmetric: |IOH| up to 3.6 mA and |IOL| up to 3.6 mA at VDD = 15 V, with VOH ≥ 14.95 V and VOL ≤ 0.05 V under 1 μA load - ensuring robust TTL/CMOS compatibility across its full voltage range.

Key Specifications

Pinout & Package

HEF4028BT,653 is housed in a plastic small outline package (SO16), SOT109-1 variant, with 16 leads, 3.9 mm body width, and standard 1.27 mm lead pitch - compatible with automated PCB assembly and IPC-7351B land patterns.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar BCD-to-decimal decoding applications.

Compared with CD74HC42M96 and SN74LS42N, the HEF4028BT,653 uniquely balances wide supply range, integrated input protection, and industrial temperature rating - making it the sole option for new designs requiring 12 V operation, field-serviceable I/O, or long-term reliability in uncontrolled environments.

Availability

HEF4028BT,653 is available at Aetrix Electronics and suitable for industrial counter systems, digital panel meters, programmable logic controllers, and legacy system upgrades requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.

Supply support for HEF4028BT,653 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 specializing in high-volume, high-reliability logic, analog, and discrete components - headquartered in Nijmegen, Netherlands, with manufacturing in Asia and Europe.

The HEF4028BT,653 belongs to Nexperia's HEF4000B logic family, engineered for industrial and automotive-qualified applications demanding wide voltage operation, robust ESD tolerance, and extended temperature performance.

FAQ

Can HEF4028BT,653 operate at 3.3 V?

No - the HEF4028BT,653 has a minimum recommended VDD of 3.0 V, but its VIH (HIGH-level input voltage) is specified as 1.5 V at VDD = 5 V, 3.0 V at VDD = 10 V, and 11.0 V at VDD = 15 V. At 3.3 V, input thresholds are not characterized, and reliable operation is not guaranteed per datasheet specifications.

Does HEF4028BT,653 require external pull-up resistors on outputs?

No - the device features push-pull CMOS outputs capable of actively driving HIGH or LOW without external passive components. Pull-ups are unnecessary unless interfacing with open-drain systems or implementing wired-OR logic, which is outside its intended use case.

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

The HEF4028BT,653 is characterized up to 50 pF load capacitance (per Table 10), with propagation delays extrapolated using CL-dependent formulas. Driving >50 pF may increase tPHL/tPLH beyond datasheet limits and cause marginal timing in high-speed applications - add buffer stages if CL exceeds 50 pF.

Is HEF4028BT,653 automotive-qualified?

No - the datasheet explicitly states "Non-automotive qualified products" in Section 14, and the device is rated only for -40 °C to +85 °C industrial grade. It lacks AEC-Q100 qualification, automotive-specific stress testing, or PPAP documentation required for automotive ECUs or infotainment systems.