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Texas Instruments CD74HC4543E — Logic ICs

CD74HC4543E BCD-to-7-Segment LED Driver, 16-DIP, 2V-6V

MPNCD74HC4543E
End of Life

Texas Instruments 74HC series BCD-to-7-segment latch/decoder/driver, 1 digit LED display, 8 µA supply, 2V to 6V, -55°C to 125°C, 16-DIP through-hole.

$1.58Ref. price · indicative, final on quote
Texas Instruments CD74HC4543E datasheet (PDF)
Packaging16-DIP (0.300", 7.62mm)
RoHSROHS3 Compliant
Series74HC
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

CD74HC4543E specifications
ParameterValue
Series74HC
Display typeLED
MountingThrough Hole
Supply voltage2V ~ 6V
Current - supply8 µA
InterfaceBCD
Operating temperature-55°C ~ 125°C
PackageTube
Configuration7 Segment
Case16-DIP (0.300\", 7.62mm)
Digits or characters1 Digit

Product details

BCD-to-7-segment driver for one-digit LED displays

The CD74HC4543E is a CMOS BCD-to-7-segment latch, decoder, and driver from the 74HC family, designed to drive a single common-cathode or common-anode LED digit. It accepts a 4-bit BCD input, latches it, decodes to a 7-segment pattern, and drives the segments directly. The 8 µA typical supply current makes it suitable for battery-powered or always-on display panels where every microamp counts.

Rated for a supply range of 2V to 6V, this driver works from a single lithium cell or a regulated 5V rail.

Through-hole 16-DIP for prototyping and legacy sockets

Housed in a 16-pin DIP (0.300" width, 7.62 mm pitch), the CD74HC4543E fits standard breadboards, prototyping boards, and socketed production boards. The through-hole package simplifies hand-assembly and rework — no fine-pitch soldering, no stencil required. Supplier device package is 16-PDIP.

Frequently asked questions

What is CD74HC4543E?

The CD74HC4543E is a CMOS BCD-to-7-segment latch/decoder/driver IC from the 74HC series. It drives one LED digit, operates from 2V to 6V, draws 8 µA typical supply current, and comes in a 16-pin DIP package.

What is the difference between CD74HC4543E and CD4511?

Both are BCD-to-7-segment drivers, but the CD74HC4543E is a 74HC CMOS part with a wider supply range (2V to 6V) and lower quiescent current (8 µA) versus the CD4511's typical 5V-only operation and higher supply draw. The CD74HC4543E also includes a latch input, while the CD4511 offers a lamp-test function. Pinouts differ — verify the board footprint before substituting.