CD4093 - Quad 2-Input NAND Schmitt Trigger IC

The CD4093 IC is also called a quad package 2-input NAND gate as it contains four independent 2-Input NAND gates with Schmitt trigger action. The IC is operated on different voltage levels and can consume a maximum of 1uA current when operated at 18V DC.

 

Features and Specifications 

This section mentions some of the features and specifications of the CD4093 IC.

1. Operating Voltage: 5V, 10V, 15V DC
2. Maximum Input Current: 1uA
3. Hysteresis Voltage Typically 0.9 V at VDD: 5 V and 2.3 V at VDD: 10 V
4. Noise Immunity Greater Than 50%
5. Unlimited input rise and fall times

 

Note: More technical information can be found in the CD4093 Datasheet, linked at the bottom of this page.

 

Pin Configuration 

The IC has 14 pins for I/O and power. The IC has four Schmitt trigger circuits with 2 input NAND gates, the table below gives us a clearer understanding of the pin configuration of the IC.

Pin Number	Pin Type	Pin Description
1	A	Input 1
2	B	Input 2
3	J	NAND Output of A & B
4	K	NAND Output of C & D
5	C	Input 3
6	D	Input 4
7	VSS	Ground
8	E	Input 5
9	F	Input 6
10	L	NAND Output of E & F
11	M	NAND Output of G & H
12	G	Input 7
13	H	Input 8
14	VCC	Positive Voltage input

 

Working and Output Table 

Also known as the NOT-AND gate, it is the logic gate that provides a false output when the inputs are true, thus saying that it is the complement output of AND gate. The CD4093 is a 14 pin IC accommodation with 4 NAND gates internally. Pin(1) A and Pin(2) B are the inputs of the NAND gate 1 which provide a complement output of AND gate at pin(3) J. Similarly, the image below represents how the NAND gates are connected to which pins.

The truth table below shows the inputs and the output of the NAND gate. Any inputs provided to pin 1, 2, 5, 6, 8, 9, 11, 12, a corresponding output through the NAND gate will be received. The following table can be referred to for the input and output values.

Input A	Input B	Output
0	0	1
1	0	1
0	1	1
1	1	0

 

CD4093 Alternatives 

Texas Instruments SN74LVC1G132DCKR, 7400, 7420

 

Available packages 

SOIC(Small outline Integrated circuit)

 

Applications of NAND Schmitt Trigger IC

Here are a few of the applications of CD4093 IC.

1. Monostable/Astable Multivibrators
2. Wave and Pulse Shapers
3. Implementation of NAND logic

 

2D Model / Dimensions

Below is the 2D model of the CD4093 IC along with its dimensions in inches(millimeters). The following information can be used to design custom footprints of the IC and be used while PCB designing and CAD modelling.