Overview
The CD54HC273F is a high-speed octal D-Type flip-flop integrated circuit manufactured by Harris Semiconductor, now part of Texas Instruments. This component is part of the 74HC series, known for its low power consumption and high noise immunity. The CD54HC273F features eight D-Type flip-flops, each controlled by a common clock (CP) and a common reset (MR) input. This device is particularly useful in digital circuits requiring sequential logic operations.
Key Specifications
| Parameter | Symbol | Test Conditions | Units | Min | Max | |
|---|---|---|---|---|---|---|
| DC Supply Voltage | VCC | V | 2 | 6 | ||
| High Level Input Voltage | VIH | VCC = 5V | V | 1.5 | 2 | |
| Low Level Input Voltage | VIL | VCC = 5V | V | 0.5 | 1.35 | |
| High Level Output Voltage (CMOS Loads) | VOH | VCC = 5V | V | 4.4 | ||
| Low Level Output Voltage (CMOS Loads) | VOL | VCC = 5V | V | 0.1 | ||
| Maximum Clock Frequency | fMAX | VCC = 5V | MHz | 25 | ||
| MR Pulse Width | tW | VCC = 5V | ns | 12 | 15 | |
| Clock Pulse Width | tW | VCC = 5V | ns | 16 | 20 | |
| Set-up Time Data to Clock | tSU | VCC = 5V | ns | 12 | 15 | |
| Hold Time, Data to Clock | tH | VCC = 5V | ns | 3 | ||
| Removal Time, MR to Clock | tREM | VCC = 5V | ns | 10 | 13 |
Key Features
- Common Clock and Asynchronous Master Reset: All eight flip-flops are controlled by a common clock (CP) and a common reset (MR) input.
- Positive Edge Triggering: Information at the D input is transferred to the Q outputs on the positive-going edge of the clock pulse.
- Buffered Inputs: The device features buffered inputs to improve signal integrity.
- Wide Operating Temperature Range: Operates from -55°C to 125°C.
- Low Power Consumption: Significant power reduction compared to LSTTL logic ICs.
- High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V for HC types.
- CMOS and LSTTL Compatibility: HCT types offer direct LSTTL input logic compatibility.
Applications
- Sequential Logic Circuits: Ideal for applications requiring edge-triggered sequential logic operations.
- Counters and Shift Registers: Can be used in the construction of counters, shift registers, and other digital circuits.
- Memory and Storage Systems: Useful in memory and storage systems where data needs to be stored and retrieved sequentially.
- Automotive and Industrial Control Systems: Suitable for use in harsh environments due to its wide operating temperature range.
Q & A
- What is the CD54HC273F?
The CD54HC273F is a high-speed octal D-Type flip-flop integrated circuit.
- What is the operating temperature range of the CD54HC273F?
The device operates from -55°C to 125°C.
- How are the flip-flops controlled in the CD54HC273F?
All eight flip-flops are controlled by a common clock (CP) and a common reset (MR) input.
- What is the maximum clock frequency for the CD54HC273F at VCC = 5V?
The maximum clock frequency is 25 MHz at VCC = 5V.
- Does the CD54HC273F have buffered inputs?
Yes, the device features buffered inputs.
- What is the power consumption of the CD54HC273F compared to LSTTL logic ICs?
The CD54HC273F has significant power reduction compared to LSTTL logic ICs.
- Is the CD54HC273F compatible with LSTTL logic?
Yes, HCT types offer direct LSTTL input logic compatibility.
- What is the setup time for data to clock in the CD54HC273F at VCC = 5V?
The setup time is 12 ns to 15 ns at VCC = 5V.
- What is the hold time for data to clock in the CD54HC273F?
The hold time is 3 ns.
- What are some typical applications of the CD54HC273F?
Typical applications include sequential logic circuits, counters, shift registers, memory and storage systems, and automotive and industrial control systems.
