The 74LS93 is a 4-bit binary counter made of two up-counters. The IC consists of a mode-2 up-counter and a mod-8 up counter. It is built using four JK Flip Flops. The 74LS93 IC has a wide range of working voltage, a wide range of working conditions, and directly interfaces with CMOS, NMOS, and TTL. The IC is smaller in size and it has a much faster speed which makes it reliable in every kind of device.
What is a Decade/Binary Counter?
A Binary Counter is a serial digital counter that counts ten digits. it resets for every new clock input. As it can go through 10 unique combinations of output, it is also called as “Decade counter”. A binary counter can count 0000, 0001, 0010, 1000, 1001, 1010, 1011, 1110, 1111, 0000, and 0001 and so on. A 4 bit binary counter will act as a decade counter by skipping any six outputs out of the 16 (24) outputs.
74LS93 Pinout
74LS93 Pin Configuration
| Pin No | Pin Name | Description |
|---|---|---|
| 1 | CKB | Clock Input B |
| 2 | R0(1) | Master Reset Input 1 |
| 3 | R0(2) | Master Reset Input 2 |
| 4 | NC | No Connection |
| 5 | VCC | Supply Voltage |
| 6 | NC | No Connection |
| 7 | NC | No Connection |
| 8 | Qc | Output Pin |
| 9 | Qb | Output Pin 2 |
| 10 | GND | Ground Pin |
| 11 | Qd | Output Pin 4 |
| 12 | Qa | Output Pin 1 |
| 13 | NC | No Connection |
| 14 | CKA | Clock Input A |
74LS93 Features & Specifications
- No. of Bits: 4
- Typical Operating Voltage: 5V
- Output High Voltage: 3.5V
- Output Low Voltage: 0.25V
- Operating Voltage Range: 4.5V to 5.5V
- Output current when high: -0.4mA
- Output current when low: 8mA
- CKB and CKA input clock frequency: 32MHz and 16MHz resp.
- CKA and CKB pulse width: 15nS and 30nS resp.
- Available in 14-pin PDIP, GDIP, PDSO packages
- Function: Counter
- Product type: Binary
- Rating: Catalog
Applications
- Used for creating long timing period
- Astable frequency divider or counter circuit
- Timing related applications
- Used in projects where Microcontrollers should be avoided
- Pulse counter or frequency divider
You can download this Datasheet for 74LS93 4-Bit Decade/Binary Counter from the link given below:
See Also: 74LS10 Triple 3-Input NAND IC | 7404 NOT Gate IC | 74LS56 50-to-1 Frequency Divider IC
