Nexperia USA Inc. 74HCT4511D,653

Overview

74HCT4511D,653 from Nexperia is a TTL-level-compatible BCD-to-7-segment latch/decoder/driver in SO16 package, featuring active-low latch enable (LE), lamp test (LT), and ripple blanking (BI) inputs, 10 mA per-output drive capability, and operation from 4.5 V to 5.5 V across –40 °C to +125 °C. It directly drives common-cathode LED displays in digital instrumentation and industrial control panels.

For engineers reviewing the 74HCT4511D,653 datasheet, 74HCT4511D,653 pinout, 74HCT4511D,653 application, or 74HCT4511D,653 equivalent, key selection criteria include TTL input compatibility, latch-controlled static segment output stability, guaranteed 10 mA sink current per segment, and SO16 thermal performance up to +125 °C.

Technical Context

The device integrates four D-type latches, a BCD-to-7-segment decoder, and seven high-current segment drivers in a single CMOS structure. Latch operation freezes BCD input state on LE rising edge, decoupling display updates from upstream data bus activity.

LT forces all segment outputs HIGH for full-digit illumination; BI forces all outputs LOW for blanking. Neither LT nor BI affects latch state-ensuring independent control of display visibility and data retention.

Key Specifications

Pinout & Package

74HCT4511D,653 uses the SOT109-1 (SO16) plastic small outline package: 16-pin, 3.9 mm body width, 1.27 mm pitch, surface-mount compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar BCD-to-7-segment latch/decoder applications.

Compared with 74HC4511D,653 and CD4511BE, the 74HCT4511D,653 uniquely balances TTL compatibility, latch reliability, and automotive-grade temperature range-making it optimal for new 5 V embedded displays requiring robust timing and diagnostics.

Availability

74HCT4511D,653 is available at Aetrix Electronics and suitable for industrial panel meters, digital multimeters, automotive instrument clusters, and appliance control panels requiring stable component supply across extended temperature ranges.

Supply support for 74HCT4511D,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 delivering high-performance, reliable components for automotive, industrial, and consumer applications, with leadership in logic, analog, and MOSFET technologies.

The 74HCT4511 belongs to Nexperia's 74HCT logic family-designed specifically for seamless integration with legacy TTL systems while leveraging CMOS efficiency and robustness in harsh environments.

FAQ

What is the maximum recommended clock or update rate for the 74HCT4511D,653 in multiplexed LED displays?

The device supports segment update rates exceeding 10 MHz due to its 27 ns typical LE→output propagation delay and 7 ns typical output transition time. For 4-digit multiplexing, this allows >2.5 MHz digit scan frequency-well above the 1–2 kHz typical for flicker-free operation. Thermal limits (500 mW SO16 max) govern sustained current, not speed.

Can the 74HCT4511D,653 drive common-anode LED displays?

No-it is designed exclusively for common-cathode configurations, with segment outputs acting as sinks (not sources). Driving common-anode displays would require external PNP transistors or a dedicated common-anode driver like the 74HCT4543. The datasheet explicitly shows only common-cathode connections in Fig. 12.

How does the ripple blanking (BI) input interact with latched data?

BI operates independently of the latch-when BI is LOW, all segment outputs force LOW regardless of stored BCD value or LE state. The internal latch retains its data, so releasing BI restores the previously latched digit. This enables blanking without disrupting data integrity or requiring re-latching.

Is there a minimum pulse width requirement for the latch enable (LE) signal?

Yes-the datasheet specifies a minimum LE pulse width of 16 ns (typical) at VCC = 4.5 V. To ensure reliable capture across temperature and voltage extremes, maintain ≥20 ns high-time. Shorter pulses risk incomplete latch triggering, resulting in metastable or incorrect segment outputs.