CD4503 Tri-state Hex Buffer


CD4503 belongs to the 4000 Series CMOS Logic Family of Integrated Circuits (IC’s) constructed with N- and P-channel enhancement mode transistors.CD4503 has Tri-state Hex Buffer

CD4503 has a supply voltage range of 5V to 20V, which is much higher than any contemporary logic family. It has buffered output which improves transfer characteristics by providing very high gain. All inputs are protected against static discharge with diodes to VDD and VSS.

CD4503 Features

  • High-Voltage Types (20V Rating)
  • 3 State Non-Inverting Type
  • 1 TTL Load Output Drive Capability
  • 2 Output Disable Controls
  • 3 State Outputs
  • 5V, 10V, and 15V Parametric Ratings

CD4503 Specifications

Absolute Maximum Ratings

  • DC Supply Voltage Range, (VDD): -0.5V to +20V (Voltage Referenced to VSS Terminals)
  • Input Voltage Range, All Inputs: -0.5V to VDD +0.5V
  • DC Input Current, Any One Input: ±10mA
  • Operating Temperature Range: -55oC to +125oC Package Types D, F, K, H
  • Storage Temperature Range (TSTG): -65oC to +150oC
  • Lead Temperature (During Soldering): +265oC
    • At Distance 1/16 ± 1/32 Inch (1.59mm ± 0.79mm) from case for 10s Maximum

CD4503 Pinout Diagram

CD4503 Pin Description

Pin NoPin NameDescription
1DIS(A)Disable Pin A
2D1Data Input Of Buffer 1
3Q1Output Of Buffer 1
4D2 Data Input Of Buffer 2
5Q2 Output Of Buffer 2
6D3 Data Input Of Buffer 3
7Q3 Output Of Buffer 3
8VSSSupply Voltage
9Q4 Output Of Buffer 4
10D4 Data Input Of Buffer 4
11Q5 Output Of Buffer 5
12D5 Data Input Of Buffer 5
13Q6 Output Of Buffer 6
14D6 Data Input Of Buffer 6
15DIS(B) Disable Pin B
16VDDDrain Voltage

CD4503 Circuit


  • 3 State Hex Buffer for Interfacing ICs with Data Buses
  • COS/MOS to TTL Hex Buffer

CD4503 Alternative Equivalent


Download CD4503 Tri-state Hex Buffer Datasheet from the link given below.