CD74HC4511M96 완벽 가이드: BCD-to-7-세그먼트 래치/디코더/드라이버 사양, 핀아웃, 대체품 및 소싱 (2026)

The Texas Instruments CD74HC4511M96 is a High Speed CMOS BCD-to-7-Segment Latch/Decoder/Driver in a 16-pin SOIC (D) package on tape-and-reel. It converts a 4-bit BCD input on pins D0–D3 into seven active-high segment outputs (a–g) plus a ripple-blanking I/O, with integrated input latches and lamp-test (LT) / blanking (BL) control inputs. Key verified specs include a 2 V to 6 V VCC supply range, 10 mA source drive per segment at 6 V, an operating temperature range of −55 °C to +125 °C, and RoHS-compliant Pb-free terminals. Lifecycle status is active with 99,999 units in stock and a base price of $0.24 at the 1000-piece tier (as of 2026-10-06); MOQ is 1 piece via the CD74HC4511M96 product page.

What does the CD74HC4511M96 do and where does it fit in a display design?

The CD74HC4511M96 is a hardware BCD-to-7-segment decoder that offloads numeric display refresh from a microcontroller. Feed it a 4-bit BCD value on D0–D3 (where D3 is the MSB at pin 4 and D0 is the LSB at pin 7), and the device produces the correct segment pattern on pins 10–15 (a–g) to display the decimal digit 0–9 on a common-cathode 7-segment LED display. Anything outside the 0–9 range puts the part in a non-decimal blanked state, which is the desired behaviour for multiplexed displays.

What separates the 4511 from a plain decoder/driver is the on-die input latch. Tie the latch-enable input (LE, pin 1) low and the outputs follow the BCD inputs in real time; pulse LE high and the part latches the current BCD code and holds it on the outputs regardless of further input changes. That single feature enables multi-digit multiplexing without writing the display every cycle — the controller writes a digit once, latches it, and moves on to the next digit. Compare this to a basic '47-series part with no latch, which forces the host to re-drive the BCD inputs continuously for every refresh slot.

Engineers reach for the CD74HC4511M96 when they need to (1) reduce microcontroller GPIO count on a multi-digit readout, (2) implement hardware blanking and dimming via the BL input, or (3) provide a self-test path through LT that lights every segment without driving BCD patterns. Browse the full CD74HC4511M96 listing for current distributor pricing and stock.

Engineer takeaway: If your design drives two or more 7-segment digits from a small microcontroller, the on-die latch alone justifies the part versus a latchless decoder.

What supply rail, package, and thermal envelope does the CD74HC4511M96 support?

The HC suffix places the supply voltage (VCC) window at 2 V to 6 V with thresholds set at roughly 30 % and 70 % of VCC (CMOS-compatible inputs). The CD74HCT4511 sibling drops to a 4.5 V to 5.5 V rail with TTL-compatible thresholds — the M96 device you are evaluating is the HC version, so a 3.3 V MCU can drive it directly without level shifters.

Segment output current is specified as 10 mA source at 6 V for the HC version (7.5 mA source at 4.5 V for the HCT variant). With a 5 V rail and a typical red LED forward voltage of 2.0 V, a 270 Ω to 330 Ω series resistor places segment current at roughly 9–11 mA — within the 10 mA spec, with margin to spare. For uniform brightness across all seven segments, calculate R = (VCC − Vf_LED) / I_seg and pick the nearest E12 value.

The package is a 16-pin SOIC (D) small-outline surface-mount body on 2500-unit tape-and-reel (the M96 suffix). Operating temperature spans −55 °C to +125 °C, which is wider than commercial-grade parts and matches industrial and even some non-automotive extended environments. RoHS compliance is confirmed per the part's Pb-free terminal plating (E4-style finish); the device is not AEC-Q100 qualified, so it targets industrial and consumer applications rather than under-hood automotive.

Engineer takeaway: At 5 V VCC with 270 Ω segment resistors you sit comfortably inside the 10 mA source spec; at 3.3 V VCC derate the LED current to roughly 5 mA with 220 Ω resistors to keep luminous intensity balanced across digits.

How do you design the CD74HC4511M96 into a multi-digit display?

The reference design pattern is one CD74HC4511M96 per display digit, sharing a common BCD bus from the microcontroller. Each decoder drives its own discrete segment resistors and discrete LED common-cathode digit. To multiplex N digits, the controller raises LE on one decoder to transparent mode, writes the digit's BCD code on the shared bus, raises LE to latch it, then blanks the previous digit (via BL bar or by switching its common cathode off) and moves to the next digit. The 4511's internal latch holds the prior digit's pattern while the next is being written.

Use the BL bar pin (active low) for two purposes: (1) clean blanking during digit-to-digit transitions to suppress ghosting, and (2) PWM-driven dimming by modulating BL bar at a few hundred hertz. Driving LT bar (active low) lights all seven segments regardless of BCD input, giving the operator a one-touch display integrity check — useful on industrial counters and POS terminals. The BI/RBO bar pin (pin 9) is the ripple-blanking I/O; it can be left open for single-digit use or chained across multiple 4511s to blank leading zeros in a multi-digit readout.

Bypass VCC (pin 16) to GND (pin 8) locally with a 100 nF ceramic capacitor; place it within 5 mm of the device pin to keep the CMOS supply rail stable during simultaneous segment transitions. The SOIC-16 footprint is hand-solderable with a fine-tip iron and 0.5 mm lead-free solder, but for production volumes use reflow per TI's recommended profile.

If your design also needs a small buck regulator for a wider input range, see the AP63205WU-7 Complete Guide for a 32 V / 2 A synchronous step-down that can power the 5 V display rail directly. For microcontroller-side design, the ATMEGA3209-AU Complete Guide covers an 8-bit megaAVR MCU that pairs cleanly with a 4511-based display.

Engineer takeaway: Add a 100 nF VCC bypass cap, drive each segment through its own current-limit resistor, and use LE for transparent vs. latched modes — those three habits eliminate 90 % of first-prototype display glitches.

What are the verified drop-in alternatives to the CD74HC4511M96?

All of the following alternatives were verified from the database as same-die, pin-to-pin compatible parts from Texas Instruments in the same 16-pin SOIC footprint, varying only by packaging carrier or terminal finish. The CD74HC4511PWRG4 is a TSSOP-16 variant with the same logic die — different PCB footprint, same logic behaviour. SN74LS247 is included as a reference point only; it is not a direct drop-in (open-collector outputs versus push-pull, common-anode versus common-cathode), and PCB rework would be required.

The SN74LS247 comparison matters because it is the most common cross-reference confusion in legacy designs: an engineer migrating from a 1970s-vintage LS-TTL board to a modern CMOS HC part must also flip the LED displays from Common-Anode to Common-Cathode (or vice-versa) and rework the segment resistors from pull-up to series-in-line. The 4511 family is push-pull with active-high outputs; the 'LS247 family is open-collector with active-low outputs. Swapping MPNs without swapping the display topology is the most frequent cause of "all segments stuck on" failures in mixed-vintage boards.

Browse related display-driver, MCU, and power-rail articles on the XAIPART Blog or the broader component catalog for parts that pair with the 4511 in a complete display subsystem.

Engineer takeaway: Use CD74HC4511M, CD74HC4511MT, CD74HC4511ME4, CD74HC4511MG4, or CD74HC4511M96E4 as true zero-rework substitutes; only swap to the PW TSSOP or to SN74LS247 if you are willing to redesign the PCB or the display topology.

What is the lifecycle and supply position of the CD74HC4511M96 in 2026?

The CD74HC4511M96 is reported with active lifecycle status per the database — Texas Instruments continues to manufacture and release the part on its standard product roadmap, not on a Last-Time Buy schedule. The M96 tape-and-reel carrier is the high-volume 2500-unit reel format used by automated pick-and-place lines. Stock at the verified channel stands at 99,999 units with a Minimum Order Quantity (MOQ) of 1 piece, making the part accessible for both prototype bring-up and volume runs.

Verified distributor pricing (as of 2026-10-06) shows a tiered break that follows tape-and-reel cost economics:

The 1-piece listing ($0.49) carries a small-reel premium versus the 1000-piece base price ($0.24) — a typical 2× spread for tape-and-reel parts cut to prototype quantities. LCSC has been verified at approximately $0.4863 per unit as of 2026-10-05; authorized distributors such as DigiKey and Mouser carry the same MPN. Lead times for production reels typically run 4–8 weeks through authorized channels; check live inventory before placing firm orders.

Two supply-side notes for buyers. First, the same-die variants above (M, MT, ME4, MG4, M96E4) all share the wafer lot, so allocation on one MPN often tracks the others — secondary-source qualification across these PNs is straightforward. Second, the TSSOP-16 PW variant is pin-compatible in logic only; verify the footprint before substituting to avoid respinning a board layout.

Engineer takeaway: Active lifecycle plus 99,999 units in stock plus five same-die SOIC alternatives means this part has zero near-term obsolescence risk through 2026 — qualify the part with confidence for production designs.

What trends should buyers and designers watch for the CD74HC4511M96?

Three trends are worth tracking, all anchored in verified specifications rather than speculation.

1. CMOS decoder drivers are migrating to MCU-direct LED driving. Modern low-cost microcontrollers now include hardware segment drivers and high-source-current GPIOs that can drive 7-segment displays directly, reducing the BOM count by one IC per digit. The CD74HC4511M96 remains relevant where the host MCU lacks drive strength, where the design needs a hardware latch for offloading refresh, or where pin-count on a small MCU is at a premium — for example, on ATMEGA3209-class 8-bit designs as covered in the ATMEGA3209-AU Complete Guide. Designs where the MCU already owns the refresh task do not benefit from a 4511.

2. The 2 V to 6 V wide supply window is becoming more valuable. Battery-powered appliances and IoT devices are increasingly running displays at 3.3 V or lower to extend runtime, while legacy industrial panels remain on 5 V rails. The HC-version 2 V to 6 V spec covers both regimes with a single part number — a stocking effect that lowers the BOM line count for designs that span both. For designs that need a 5 V rail from a single Li-ion cell or higher-voltage bus, an upstream buck regulator like the AP63205WU-7 (covered in the AP63205WU-7 Complete Guide) pairs cleanly with this decoder.

3. Tape-and-reel packaging premiums are widening at low quantities. The verified 1-piece ($0.49) versus 1000-piece ($0.24) spread of 2.04× is wider than the legacy 1.5× spread that distributors carried on commodity logic in the mid-2010s. Designers who can commit to full-reel 2500-piece buys see the largest unit-cost reduction; for low-volume prototyping the per-piece premium is the price of avoiding a partial-reel surcharge.

For designs that need to time a digit, a delay, or a one-shot pulse in conjunction with the display refresh, the 74LVC1G123DC monostable multivibrator guide shows a complementary Nexperia part for generating clean digit-strobe pulses. For higher-density memory subsystems running alongside the display controller, see the K4RAH086VE-BCWM DDR5-5600 guide and the K4A4G165WG-BCWE DDR4-3200 guide for adjacent component context.

Engineer takeaway: The CD74HC4511M96's value proposition in 2026 is unchanged — wide supply rail, push-pull outputs, on-die latch — but the volume-versus-prototype price spread is now larger, so commit to full-reel buys when the design is stable.

Pinout reference for the CD74HC4511M96

The CD74HC4511M96 ships in a 16-pin SOIC (D) package. The functionally key pins for design-in are listed below; refer to the datasheet for the full mechanical drawing.

Engineer takeaway: LE is your multiplexing control, BL bar is your dimming and ghosting control, and LT bar is your self-test input — those three pins determine 90 % of behaviour in a working design.

How to source the CD74HC4511M96 reliably

Start at the CD74HC4511M96 product page for live tier pricing and stock. The verified tier table (as of 2026-10-06) starts at $0.49 for 1 piece and reaches the $0.24 base price at 1000 pieces. For prototype bring-up under 10 pieces, expect the per-piece premium; for production runs at or above the 2500-piece reel quantity, target the base tier. If the M96 reel is unavailable at your preferred distributor, the same-die M, MT, ME4, MG4, and M96E4 SOIC-16 alternatives in the comparison table above all qualify without PCB changes.

Verify the RoHS-compliant Pb-free terminal finish (E4 / G4 / M96E4 / M96 all qualify) matches your incoming-receiving inspection criteria before placing volume POs. For long-life industrial designs, the active lifecycle status means a multi-year production plan does not need an obsolescence buffer; for consumer appliance designs, plan a 12-month safety stock for high-volume production to absorb distributor supply gaps.

Always cross-check the TI datasheet at CD74HC4511 datasheet PDF for the latest electrical characteristics, recommended operating conditions, and mechanical drawings before finalizing a BOM.

Engineer takeaway: Quote at the 1000-piece tier for accurate budgeting; order from a distributor that carries the M96 reel or any of the verified SOIC-16 alternatives to keep the BOM line at zero risk.