Nexperia USA Inc. 74HC4040DB,112

Overview

74HC4040DB,112 from Nexperia is a 12-stage asynchronous binary ripple counter IC with CMOS logic, operating from 2.0 V to 6.0 V supply, featuring a HIGH-to-LOW clock edge-triggered input (CP), active-HIGH asynchronous master reset (MR), and twelve buffered Q0–Q11 outputs. It delivers up to 98 MHz maximum clock frequency at VCC = 4.5 V, 50 pF load, and supports industrial temperature range (−40 °C to +125 °C). Used in frequency division and timing control circuits where low-power, high-noise-immunity counting is required.

For engineers reviewing the 74HC4040DB,112 datasheet, 74HC4040DB,112 pinout, 74HC4040DB,112 application, or 74HC4040DB,112 equivalent, this page provides verified functional identity, SO16 package mapping, confirmed 16-pin terminal roles, real-world timing behavior (e.g., 17 ns CP→Q0 propagation at 4.5 V), and validated alternatives for ripple counter substitution in embedded timing designs.

Technical Context

The 74HC4040DB,112 implements a cascaded chain of 12 static toggle flip-flops, advancing only on the HIGH-to-LOW transition of CP. Each stage drives the next via its Q output, resulting in inherent ripple delay-Q11 exhibits cumulative propagation delay up to 45 ns at 4.5 V. The MR input forces all outputs LOW asynchronously, overriding clock state regardless of CP level.

No internal synchronization or carry lookahead is present; output transitions occur sequentially with inter-stage delays governed by VCC and load capacitance. Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors, supporting mixed-voltage system integration.

Key Specifications

Pinout & Package

74HC4040DB,112 is supplied in SO16 (SOT109-1) plastic small outline package: 16-pin, 3.9 mm body width, 1.27 mm pitch, gull-wing leads. Pin 1 index located at top-left corner with beveled edge marking.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 12-bit asynchronous counter applications.

Compared with 74HC4040DB,112, the 74HC4020PW,118 extends division depth while maintaining identical timing behavior, whereas CD74HC4040M96 offers second-source assurance with marginally relaxed output drive strength-both require no PCB redesign but differ in maximum count length and supply current headroom.

Availability

74HC4040DB,112 is available at Aetrix Electronics and suitable for frequency division, time delay generation, control sequencing, and serial data rate control requiring stable component supply across automotive under-hood, industrial automation, and consumer electronics programs.

Supply support for 74HC4040DB,112 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 for automotive, industrial, and consumer markets.

The 74HC4040 belongs to Nexperia's HC logic family-designed for low-power, high-noise-immunity digital signal routing and timing control in space-constrained, thermally demanding applications.

FAQ

What is the maximum clock frequency supported by 74HC4040DB,112?

The 74HC4040DB,112 supports up to 98 MHz at VCC = 4.5 V with 50 pF load, as specified in Table 7 of the datasheet. This is the maximum frequency at which the first stage (Q0) reliably toggles; higher-order outputs (e.g., Q11) exhibit cumulative ripple delay and cannot sustain full-rate operation across all bits simultaneously.

Can 74HC4040DB,112 be used with a 3.3 V supply?

Yes-74HC4040DB,112 operates over 2.0 V to 6.0 V, making it fully compatible with 3.3 V systems. At VCC = 3.3 V, VIH is guaranteed ≥2.31 V and VOL ≤0.33 V (per Table 6), providing adequate noise margin for interfacing with standard 3.3 V CMOS logic families.

Is the master reset (MR) input synchronous or asynchronous?

The MR input is asynchronous: a HIGH applied to MR immediately forces all Q0–Q11 outputs LOW, regardless of CP state or timing. This behavior is explicitly defined in Section 1 and the Function Table (Table 3), and verified in the timing diagram (Fig. 5).

Does 74HC4040DB,112 have built-in Schmitt-trigger inputs?

No-the 74HC4040DB,112 does not include Schmitt-trigger inputs. Its CP and MR inputs follow standard CMOS threshold behavior (VIH ≈ 0.7×VCC, VIL ≈ 0.3×VCC), as confirmed in Table 6. External hysteresis must be added if driving from slow-rising or noisy signals.