CD4043 Quad NOR R-S Latch Tri-state IC DIP-16 Package

The CD4043 is a CMOS quad NOR R-S latch with tri-state outputs, packaged in a DIP-16 form factor. Each of the four latches is set and reset by active-high inputs, with a common output enable (OE) pin that places all outputs in a high-impedance state when low. This IC is ideal for digital memory and bus-oriented applications in hobbyist and educational projects.

Specifications

• Logic family: CMOS
• Supply voltage: 3V to 15V DC
• Number of latches: 4 (quad)
• Latch type: NOR R-S (Set/Reset)
• Output type: Tri-state (3-state) with common Output Enable (OE)
• Input logic: Active-high for Set (S) and Reset (R)
• Package: DIP-16 (Dual In-line Package, 16 pins)
• Operating temperature: -55°C to +125°C

Compatible with

• Arduino (Uno, Mega, Nano, etc.)
• ESP32 and ESP8266
• Raspberry Pi (via level shifting)
• STM32 microcontrollers
• Any 3V–15V logic system

What you can build with it

• Digital memory register for storing button states or sensor flags
• Bus-controlled output latch for multiplexing multiple devices on shared data lines
• Simple state machine for educational logic design projects

Built and Backed by Compoden

Every CD4043 you buy from Compoden comes with a free AI build companion — delivered via QR code, email, or WhatsApp — that helps you wire and program this IC into a working project. With 10 years of experience supplying makers and institutions across India, we ensure you get genuine parts and practical support. Pay your way: UPI, cards, or Cash on Delivery, anywhere in India.

What is a tri-state output on the CD4043?

The tri-state output has three states: logic high, logic low, and high-impedance (Hi-Z). When the Output Enable (OE) pin is low, all outputs go to Hi-Z, effectively disconnecting them from the circuit bus. This allows multiple devices to share the same data lines.

How do I set and reset a latch on the CD4043?

Each latch has a Set (S) and Reset (R) input. Applying a logic high to the S input sets the output high. Applying a logic high to the R input resets the output low. Both inputs should not be high simultaneously, as this results in an undefined state.

What payment options are available for CD4043 Quad NOR R-S Latch IC?

You can pay using UPI, credit/debit cards, or Cash on Delivery (COD). All payment options are available across India.

How long does delivery take for the CD4043 IC?

We ship the CD4043 across India including Delhi, Mumbai, Bangalore, Hyderabad, Chennai, and Pune. Delivery typically takes 3–7 business days depending on your location.