Overview
The CD74HC93MT, produced by Texas Instruments, is a high-speed silicon-gate CMOS logic 4-bit binary ripple counter. This device is part of the 74HC series and is pin-compatible with low power Schottky TTL (LSTTL) logic ICs. It consists of four flip-flops internally connected to provide a divide-by-two section and a divide-by-eight section, each with separate clock inputs (CP0 and CP1) to initiate state changes on the HIGH to LOW clock transition. The counter is designed for asynchronous reset and features a wide operating temperature range from -55°C to 125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage | 2 V to 6 V | V |
| Minimum Operating Temperature | -55°C | °C |
| Maximum Operating Temperature | 125°C | °C |
| Maximum Clock Frequency | Up to 35 MHz | MHz |
| Trigger Type | Negative Edge | |
| Reset Type | Asynchronous | |
| Package Type | 14-SOIC (0.154", 3.90mm Width) | |
| Mounting Type | Surface Mount | |
| Lead Free Status / RoHS Status | Lead free / RoHS Compliant |
Key Features
- Can be configured to divide by 2, 8, and 16.
- Asynchronous reset capability.
- Fanout (over temperature range): Standard outputs can drive 10 LSTTL loads, and bus driver outputs can drive 15 LSTTL loads.
- Wide operating temperature range: -55°C to 125°C.
- Significant power reduction compared to LSTTL logic ICs.
- High noise immunity: NIL = 30%, NIH = 30% of VCC for HC types, and direct LSTTL input logic compatibility for HCT types.
- CMOS input compatibility with low input current (II ≤ 1 µA at VOL, VOH).
Applications
- General-purpose counting and timing applications.
- Frequency division in digital circuits.
- Sequential logic circuits requiring asynchronous reset.
- High-speed digital systems where low power consumption and high noise immunity are crucial.
- Automotive and industrial control systems due to its wide operating temperature range.
Q & A
- What is the operating supply voltage range of the CD74HC93MT?
The operating supply voltage range is from 2 V to 6 V.
- What is the maximum clock frequency of the CD74HC93MT?
The maximum clock frequency is up to 35 MHz.
- What type of reset does the CD74HC93MT have?
The CD74HC93MT has an asynchronous reset capability.
- What is the operating temperature range of the CD74HC93MT?
The operating temperature range is from -55°C to 125°C.
- Is the CD74HC93MT RoHS compliant?
Yes, the CD74HC93MT is lead free and RoHS compliant.
- What is the package type of the CD74HC93MT?
The package type is 14-SOIC (0.154", 3.90mm Width).
- Can the CD74HC93MT be used in high-speed digital systems?
Yes, it is suitable for high-speed digital systems due to its high-speed CMOS logic and low power consumption.
- What is the fanout capability of the CD74HC93MT?
The standard outputs can drive 10 LSTTL loads, and bus driver outputs can drive 15 LSTTL loads.
- Is the CD74HC93MT compatible with LSTTL logic?
Yes, it is pin-compatible with low power Schottky TTL (LSTTL) logic ICs and has direct LSTTL input logic compatibility for HCT types.
- What is the input current characteristic of the CD74HC93MT?
The input current is very low, with II ≤ 1 µA at VOL, VOH.
