Nexperia USA Inc. 74HC160D,653

Overview

74HC160D,653 from Nexperia is a synchronous presettable BCD decade counter with asynchronous master reset (MR), internal look-ahead carry, dual count-enable inputs (CEP/CET), and parallel load capability via D0–D3 and PE. It operates on positive-edge clock (CP), delivers Q0–Q3 outputs, and generates a terminal count (TC) pulse synchronized to Q0 for cascading. Used in digital timing, frequency division, and control logic circuits requiring precise decade sequencing.

For engineers reviewing the 74HC160D,653 datasheet, 74HC160D,653 pinout, 74HC160D,653 application, or 74HC160D,653 equivalent, this device supports synchronous loading, high-speed cascading via TC, and robust operation across -40 °C to +125 °C - critical for industrial control panels, instrumentation counters, and legacy TTL-compatible logic upgrades.

Technical Context

The 74HC160D implements four edge-triggered D-type flip-flops with synchronous BCD counting (0–9), where TC asserts HIGH only when CET = HIGH and state = 9 (Q3Q2Q1Q0 = 1001). Counting is enabled only when both CEP and CET are HIGH; PE enables parallel data capture independent of enable states.

Asynchronous MR forces Q0–Q3 LOW regardless of CP, PE, or enable levels, enabling immediate system reset. The look-ahead carry architecture minimizes propagation delay in multi-stage counters, with TC-to-CP setup time and CP-to-TC delay directly determining maximum cascade clock frequency (e.g., 24 MHz at VCC = 4.5 V).

Key Specifications

Pinout & Package

74HC160D,653 is housed in a 16-pin SO16 (SOT109-1) plastic small outline package, 3.9 mm body width, with gull-wing leads and standard JEDEC footprint.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar BCD decade counter applications.

Compared with 74HC160D,653, the 74HCT160D offers superior noise margin in mixed TTL/CMOS systems, while SN74HC160N trades surface-mount reliability for mechanical serviceability - choice depends on board assembly method and interface voltage ecosystem.

Availability

74HC160D,653 is available at Aetrix Electronics and suitable for industrial counter modules, legacy system timing upgrades, and digital panel meter interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC160D,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 leading semiconductor manufacturer specializing in high-performance logic, analog, and discrete components, with global R&D and manufacturing infrastructure focused on reliability and scalability.

The 74HC logic family targets cost-sensitive, high-volume digital systems requiring robust CMOS performance, low static power, and broad voltage compatibility - designed for industrial control, consumer electronics, and automotive subsystems.

FAQ

Can 74HC160D,653 operate at 3.3 V?

Yes. The device is fully specified from 2.0 V to 6.0 V, with guaranteed operation at 3.3 V. At VCC = 3.3 V, typical propagation delay is ~45 ns and fmax ≈ 18 MHz. Input thresholds scale with VCC, so 3.3 V logic signals interface directly without level translation.

What is the function of the CEP and CET pins together?

Both CEP and CET must be HIGH for counting to occur. CET additionally controls the TC output: TC goes HIGH only when CET = HIGH and the counter reaches state 9 (1001). CEP enables the count action but does not affect TC - allowing independent gating of counting versus carry generation.

How does the parallel load feature interact with counting?

When PE is LOW, the next CP rising edge loads D0–D3 into Q0–Q3 regardless of CEP, CET, or current count state. This occurs synchronously and overrides normal counting - enabling immediate preset to any BCD value without waiting for terminal count or reset.

Is there a minimum pulse width requirement for the MR signal?

Yes. Per datasheet Section 10, MR LOW pulse width must be ≥20 ns at VCC = 4.5 V (≥100 ns at VCC = 2.0 V) to guarantee reliable reset. Shorter pulses may fail to clear all flip-flops, resulting in metastable or partial reset states.