Overview
The CY74FCT245ATQCT is an 8-bit transceiver with 3-state outputs, manufactured by Texas Instruments. This device is designed for bus-oriented applications and features noninverting bidirectional buffers. The transmit/receive (T/R) input determines the direction of data flow, and the output enable (OE) input can disable both the A and B ports by putting them in a high-impedance state. This component is fully specified for partial-power-down applications using Ioff, making it suitable for a variety of digital systems.
Key Specifications
| Parameter | Min | Nom | Max |
|---|---|---|---|
| VCC Supply Voltage | 4.75 V | 5 V | 5.25 V |
| VIH High-Level Input Voltage | 2 V | ||
| VIL Low-Level Input Voltage | 0.8 V | ||
| IOH High-Level Output Current | -32 mA | ||
| IOL Low-Level Output Current | 64 mA | ||
| TA Operating Free-Air Temperature | -40°C | 85°C | |
| tPLH Propagation Delay Time (A or B to B or A) | 1.5 ns | 4.9 ns | |
| tPHL Propagation Delay Time (A or B to B or A) | 1.5 ns | 4.9 ns |
Key Features
- Function, pinout, and drive 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 – 2000-V Human-Body Model, 200-V Machine Model, and 1000-V Charged-Device Model.
- Matched rise and fall times.
- Fully compatible with TTL input and output logic levels.
Applications
The CY74FCT245ATQCT is ideal for bus-oriented applications, including data transmission and reception in digital systems. It is particularly useful in scenarios where data needs to be transmitted bidirectionally between two points, such as in computer buses, communication networks, and other digital communication systems.
Q & A
- What is the CY74FCT245ATQCT used for? The CY74FCT245ATQCT is used for bidirectional data transmission and reception in digital systems, particularly in bus-oriented applications.
- What is the significance of the T/R input in the CY74FCT245ATQCT? The transmit/receive (T/R) input determines the direction of data flow through the device.
- How does the output enable (OE) input function? The output enable (OE) input, when high, disables both the A and B ports by putting them in a high-impedance state.
- What is the operating temperature range of the CY74FCT245ATQCT? The operating temperature range is from -40°C to 85°C.
- Does the CY74FCT245ATQCT support partial-power-down mode? Yes, it supports partial-power-down mode operation using Ioff.
- What is the ESD protection level of the CY74FCT245ATQCT? The ESD protection exceeds JESD 22 – 2000-V Human-Body Model, 200-V Machine Model, and 1000-V Charged-Device Model.
- What are the typical output current capabilities of the CY74FCT245ATQCT? The device can source up to 32 mA and sink up to 64 mA.
- Is the CY74FCT245ATQCT compatible with TTL logic levels? Yes, it is fully compatible with TTL input and output logic levels.
- What package options are available for the CY74FCT245ATQCT? It is available in QSOP and SOIC packages among others.
- What is the propagation delay time of the CY74FCT245ATQCT? The propagation delay time (tPLH and tPHL) ranges from 1.5 ns to 4.9 ns.
