Overview
The CD74HC93M, produced by Texas Instruments (though sometimes listed under Harris Corporation due to historical reasons), is a high-speed CMOS logic 4-bit binary ripple counter. This device is part of the 74HC series and is designed to be pin-compatible with low power Schottky TTL (LSTTL) logic ICs. It consists of four flip-flops internally connected to provide divide-by-two and divide-by-eight sections, each with separate clock inputs. The counter is suitable for a wide range of applications requiring binary counting and division.
Key Specifications
| Attribute | Value |
|---|---|
| Voltage - Supply | 2 V ~ 6 V |
| Trigger Type | Negative Edge |
| Supplier Device Package | 14-SOIC |
| Series | 74HC |
| Reset | Asynchronous |
| Package / Case | 14-SOIC (0.154", 3.90mm Width) |
| Operating Temperature | -55°C ~ 125°C |
| Number of Elements | 1 |
| Number of Bits per Element | 4 |
| Mounting Type | Surface Mount |
| Logic Type | Binary Counter |
| Direction | Up |
| Count Rate | 35 MHz |
| Base Product Number | 74HC93 |
Key Features
- Can be configured to divide by 2, 8, and 16.
- Asynchronous reset.
- Fanout (over temperature range): Standard outputs support 10 LSTTL loads, and bus driver outputs support 15 LSTTL loads.
- Wide operating temperature range: -55°C to 125°C.
- Significant power reduction compared to LSTTL logic ICs.
- HC types: 2 V to 6 V operation, high noise immunity (NIL = 30%, NIH = 30% of VCC).
- HCT types: 4.5 V to 5.5 V operation, direct LSTTL input logic compatibility.
Applications
The CD74HC93M is versatile and can be used in various applications requiring binary counting and division. These include:
- Digital counters and dividers in electronic circuits.
- Timing and clock generation circuits.
- Sequential logic circuits.
- Automotive and industrial control systems.
- Consumer electronics requiring high-speed counting functions.
Q & A
- What is the voltage supply range for the CD74HC93M?
The voltage supply range is 2 V to 6 V for HC types and 4.5 V to 5.5 V for HCT types. - What is the maximum clock frequency of the CD74HC93M?
The maximum clock frequency is up to 35 MHz. - What is the operating temperature range of the CD74HC93M?
The operating temperature range is -55°C to 125°C. - What type of reset does the CD74HC93M have?
The CD74HC93M has an asynchronous reset. - What is the package type of the CD74HC93M?
The package type is 14-SOIC. - How many bits does the counter have?
The counter has 4 bits. - Is the CD74HC93M RoHS compliant?
No, the CD74HC93M is not RoHS compliant. - What is the fanout capability of the CD74HC93M?
The standard outputs can drive 10 LSTTL loads, and the bus driver outputs can drive 15 LSTTL loads. - What are the typical propagation delays for the CD74HC93M?
The propagation delays vary based on the supply voltage but are typically in the range of 10-190 ns. - Can the CD74HC93M be used in high-speed applications?
Yes, the CD74HC93M is designed for high-speed applications with significant power reduction compared to LSTTL logic ICs.
