Overview
The CY74FCT573ATQCT is an 8-bit latch with 3-state outputs, manufactured by Texas Instruments. This device is designed for bus-organized applications and features a flow-through pinout that simplifies board design. When the latch-enable (LE) input is high, the flip-flops appear transparent to the data, and data is latched when LE transitions from high to low. The output-enable (OE) input controls the state of the outputs, with low OE allowing data to appear on the bus and high OE putting the bus output in a high-impedance state.
The CY74FCT573ATQCT is fully specified for partial-power-down applications using Ioff circuitry, which disables the outputs to prevent damaging current backflow when the device is powered down.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SSOP (DBQ) | - |
| Pins | 20 | - |
| Operating Temperature Range | -40°C to 85°C | °C |
| Supply Voltage Range | -0.5 V to 7 V | V |
| Output Sink Current | 64 mA | mA |
| Output Source Current | 32 mA | mA |
| ESD Protection | 2000-V Human-Body Model, 200-V Machine Model, 1000-V Charged-Device Model | V |
Key Features
- Function and Pinout Compatible With FCT and F Logic
- Reduced VOH (Typically = 3.3 V) Versions of Equivalent FCT Functions
- Edge-Rate Control Circuitry for Significantly Improved Noise Characteristics
- Ioff Supports Partial-Power-Down Mode Operation
- ESD Protection Exceeds JESD 22 Standards
- Matched Rise and Fall Times
- Fully Compatible With TTL Input and Output Logic Levels
- 3-State Outputs
Applications
The CY74FCT573ATQCT is suitable for various bus-organized applications, including data transmission and storage systems, microprocessor and microcontroller interfaces, and other digital logic circuits where 3-state outputs and latch functionality are required.
Q & A
- What is the CY74FCT573ATQCT?
The CY74FCT573ATQCT is an 8-bit latch with 3-state outputs, designed for bus-organized applications.
- What is the operating temperature range of the CY74FCT573ATQCT?
The operating temperature range is -40°C to 85°C.
- What type of package does the CY74FCT573ATQCT come in?
The device comes in an SSOP (DBQ) package with 20 pins.
- What is the output sink and source current of the CY74FCT573ATQCT?
The output sink current is 64 mA, and the output source current is 32 mA.
- Does the CY74FCT573ATQCT support partial-power-down mode?
Yes, it supports partial-power-down mode using Ioff circuitry.
- What kind of ESD protection does the CY74FCT573ATQCT have?
The device has ESD protection exceeding JESD 22 standards, including 2000-V Human-Body Model, 200-V Machine Model, and 1000-V Charged-Device Model.
- Is the CY74FCT573ATQCT compatible with TTL logic levels?
Yes, it is fully compatible with TTL input and output logic levels.
- What is the purpose of the latch-enable (LE) and output-enable (OE) inputs?
The LE input controls when data is latched, and the OE input controls the state of the outputs, either allowing data to appear on the bus or putting the bus output in a high-impedance state.
- How does the flow-through pinout of the CY74FCT573ATQCT benefit board design?
The flow-through pinout simplifies board design by aligning the input and output pins in a linear fashion.
- What are some typical applications of the CY74FCT573ATQCT?
Typical applications include data transmission and storage systems, microprocessor and microcontroller interfaces, and other digital logic circuits.
