Texas Instruments CD74HC4511M96E4

Overview

CD74HC4511M96E4 from Texas Instruments is a BCD-to-7-segment latch/decoder/driver IC in 16-pin SOIC package, operating from 2 V to 6 V supply. It features input latching (D0–D3), active-low blanking (BL), lamp-test (LT), and latch-enable (LE) control. With 10 mA high-side sourcing capability at 6 V and balanced propagation delays, it drives common-cathode 7-segment LED displays directly in industrial panel meters and digital instrumentation.

For engineers reviewing the CD74HC4511M96E4 datasheet, CD74HC4511M96E4 pinout, CD74HC4511M96E4 application, or CD74HC4511M96E4 equivalent, key selection considerations include its HC logic family voltage range (2–6 V), latch-enabled BCD decoding, lamp-test/blanking functionality, and SOIC-16 thermal performance (R_θJA = 67°C/W).

Technical Context

The CD74HC4511M96E4 implements a synchronous latch-decode-drive architecture: when LE is high, D0–D3 inputs are latched; when LE is low, outputs follow inputs transparently. Its internal decoder maps valid BCD codes (0–9) to segment outputs (a–g), with illegal codes (10–15) forcing all segments low.

It uses standard CMOS output transistors optimized for sourcing current to common-cathode LEDs. BL asserts low to force all segment outputs low (blanking), while LT asserts low to drive all segments high (lamp test), independent of latch state or BCD input.

Key Specifications

Pinout & Package

CD74HC4511M96E4 is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package, body size 9.90 mm × 3.90 mm, with 1.27 mm pitch and gull-wing leads. The package is RoHS-compliant, tape-and-reel packaged (2500 units/reel), and rated for –55°C to +125°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with CD74HCT4511E and SN74LS47N, CD74HC4511M96E4 offers wider supply flexibility (2–6 V), lower quiescent current, and active-high sourcing outputs ideal for modern common-cathode LED layouts - making it optimal for new designs prioritizing efficiency, voltage scalability, and simplified layout.

Availability

CD74HC4511M96E4 is available at Aetrix Electronics and suitable for digital instrumentation, industrial HMI panels, and automotive display subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for CD74HC4511M96E4 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic ICs, with decades of expertise in high-reliability industrial and automotive components.

The CD74HC4511 series belongs to TI's legacy HC logic family, designed specifically for robust, low-power BCD-driven LED display interfaces in measurement, control, and human-machine interaction systems.

FAQ

What is the maximum supply voltage for CD74HC4511M96E4?

The absolute maximum supply voltage for CD74HC4511M96E4 is 7 V, but the recommended operating range is 2 V to 6 V. Operation at 6 V enables full 10 mA output sourcing capability per segment, while maintaining safe margins against thermal stress and process variation. Exceeding 6 V risks accelerated aging and violates TI's recommended conditions.

Can CD74HC4511M96E4 drive common-anode displays?

No, CD74HC4511M96E4 cannot directly drive common-anode displays. Its outputs (a–g) are active-high sourcing drivers intended for common-cathode LEDs. To use it with common-anode displays, external NPN transistor inverters or dedicated common-anode drivers like SN74LS47 would be required - adding complexity and power loss.

How does the lamp test (LT) function interact with blanking (BL) in CD74HC4511M96E4?

In CD74HC4511M96E4, LT has priority over BL: when LT is low, all segment outputs (a–g) are forced high regardless of BL state or BCD input. BL only takes effect when LT is high. This hierarchy allows unambiguous visual verification (LT) even during normal blanking operations - a key diagnostic feature for field service.

Is CD74HC4511M96E4 pin-compatible with CD74HCT4511E?

Yes, CD74HC4511M96E4 and CD74HCT4511E share identical pinout, package footprint (SOIC-16), and functional mapping. However, they differ in input threshold compatibility: CD74HC4511M96E4 uses CMOS thresholds (VIH ≥ 70% VCC), while CD74HCT4511E uses TTL thresholds (VIH ≥ 2 V). Swapping requires verifying source logic levels.

What thermal considerations apply to CD74HC4511M96E4 in continuous LED-driving operation?

With R_θJA = 67°C/W and max power dissipation of ~15 mW (at 6 V, 10 mA × 7 segments), CD74HC4511M96E4 rises only ~1°C above ambient under full load. No heatsinking is needed, but PCB copper pour under the exposed pad (if present) and proper 0.1 μF VCC bypass placement are essential to maintain stability and noise immunity.