CD40373 belongs to the 4000 Series CMOS Logic Family of Integrated Circuits (IC’s) constructed with N- and P-channel enhancement mode transistors. CD40373 has an Octal D-type transparent latch
CD40373 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.

CD40373 Features
- High-Voltage Types (20V Rating)
- 100% Tested for Maximum Quiescent Current at 20V
- 5V, 10V, and 15V Parametric Ratings
- Maximum Input Current of 1μA at 18V Over Full Package Temperature Range; 100nA at 18V and +25oC
- Noise Margin (Over Full Package Temperature Range):
- 1V at VDD = 5V
- 2V at VDD = 10V
- 2.5V at VDD = 15V
CD40373 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
CD40373 Pinout Diagram

CD40373 Pin Description
Pin No | Pin Name | Description |
1 | EO’ | Invert Enable Output |
2 | O0 | Transparent Latch Output 1 |
3 | D0 | Transparent Latch Input 1 |
4 | D1 | Transparent Latch Input 2 |
5 | O1 | Transparent Latch Output 2 |
6 | O2 | Transparent Latch Output 3 |
7 | D2 | Transparent Latch Input 3 |
8 | D3 | Transparent Latch Input 4 |
9 | O3 | Transparent Latch Output 4 |
10 | VSS | Supply Voltage |
11 | E | Latch Enable |
12 | O4 | Transparent Latch Output 5 |
13 | D4 | Transparent Latch Input 5 |
14 | D5 | Transparent Latch Input 6 |
15 | O5 | Transparent Latch Output 6 |
16 | O6 | Transparent Latch Output 7 |
17 | D6 | Transparent Latch Input 7 |
18 | D7 | Transparent Latch Input 8 |
19 | O7 | Transparent Latch Output 8 |
20 | VDD | Drain Voltage |
CD40373 Circuit
Applications
- Computing as well as data storage
CD40373 Alternative Equivalent
Download CD40373-Octal D-type transparent latch Datasheet from the link given below.