Overview
The CY74FCT244ATQCT is an 8-bit buffer and line driver produced by Texas Instruments. This device is designed to be used as memory address drivers, clock drivers, and bus-oriented transmitters/receivers. It offers high-speed and drive capabilities similar to its bipolar logic counterparts while reducing power consumption. The CY74FCT244ATQCT is fully compatible with TTL, NMOS, and CMOS devices, allowing direct interface without external components. It also features 3-state outputs and supports partial-power-down mode operation using Ioff circuitry, which prevents damaging current backflow when the device is powered down.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Supply Voltage (VCC) | V | 4.75 | 5 | 5.25 |
| High-Level Input Voltage (VIH) | V | 2 | 2 | |
| Low-Level Input Voltage (VIL) | V | 0.8 | 0.8 | |
| High-Level Output Current (IOH) | mA | -32 | -32 | |
| Low-Level Output Current (IOL) | mA | 64 | 64 | |
| Operating Free-Air Temperature (TA) | °C | -40 | 85 | |
| Propagation Delay Time (tPLH, tPHL) | ns | 1.5 | 4.6 | |
| Output Enable Time (tPZH, tPZL) | ns | 1.5 | 6.2 |
Key Features
- Function, pinout, and drive compatible with FCT and F logic.
- Edge-rate control circuitry for significantly improved noise characteristics.
- Ioff supports partial-power-down mode operation.
- ESD protection exceeds JESD 22 standards (2000-V human-body model, 200-V machine model, 1000-V charged-device model).
- Matched rise and fall times.
- Fully compatible with TTL input and output logic levels.
- 3-state outputs.
Applications
- Memory address drivers.
- Clock drivers.
- Bus-oriented transmitters/receivers.
- High-speed data transmission systems.
- Systems requiring low power consumption and high drive capabilities.
Q & A
- What is the CY74FCT244ATQCT used for?
The CY74FCT244ATQCT is used as an 8-bit buffer and line driver, suitable for applications such as memory address drivers, clock drivers, and bus-oriented transmitters/receivers.
- What are the key features of the CY74FCT244ATQCT?
Key features include edge-rate control circuitry, Ioff for partial-power-down mode, ESD protection, matched rise and fall times, and full compatibility with TTL logic levels.
- What is the typical supply voltage for the CY74FCT244ATQCT?
The typical supply voltage (VCC) is 5 V, with a range of 4.75 V to 5.25 V.
- What are the output current capabilities of the CY74FCT244ATQCT?
The device can source up to 32 mA and sink up to 64 mA of current.
- What is the operating temperature range for the CY74FCT244ATQCT?
The operating free-air temperature range is from -40°C to 85°C.
- Does the CY74FCT244ATQCT support partial-power-down mode?
Yes, it supports partial-power-down mode operation using Ioff circuitry.
- What type of ESD protection does the CY74FCT244ATQCT have?
The device has ESD protection that exceeds JESD 22 standards, including 2000-V human-body model, 200-V machine model, and 1000-V charged-device model.
- What is the propagation delay time for the CY74FCT244ATQCT?
The propagation delay time (tPLH, tPHL) ranges from 1.5 ns to 4.6 ns.
- Is the CY74FCT244ATQCT compatible with TTL logic levels?
Yes, it is fully compatible with TTL input and output logic levels.
- What package types are available for the CY74FCT244ATQCT?
The device is available in SSOP (DBQ) and SOIC (DW) packages.
