Overview
The SN64BCT25244 is a 25-Ω octal buffer and line driver designed by Texas Instruments to enhance the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented transceivers. This device is part of Texas Instruments' state-of-the-art BiCMOS design, which significantly reduces the quiescent current (ICCZ). It features high-impedance state during power up and power down, and includes robust ESD protection exceeding 2000 V per MIL-STD-883C, Method 3015. The SN64BCT25244 is capable of sinking 188-mA IOL, facilitating the switching of 25-Ω transmission lines on the incident wave.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| Operating Temperature Range | -40°C to 85°C, 0°C to 70°C | °C | |
| Supply Voltage | Up to 5.5 V | V | |
| Output Enable (OE) Voltage | High: 2.5 V to 5.5 V, Low: 0 V to 0.8 V | V | |
| Output Current (IOL) | 188 mA | mA | |
| Propagation Delay (tPLH, tPHL) | 1 to 6 ns (typical at VCC = 5 V, TA = 25°C) | ns | VCC = 5 V, TA = 25°C |
| ESD Protection | Exceeds 2000 V per MIL-STD-883C, Method 3015 | V | |
| Package Options | Plastic Small-Outline (DW), Standard Plastic 300-mil DIPs (NT) | ||
| Pins | 24 |
Key Features
- State-of-the-Art BiCMOS Design significantly reduces ICCZ.
- High-Impedance State During Power Up and Power Down.
- ESD Protection exceeds 2000 V per MIL-STD-883C, Method 3015; exceeds 200 V using Machine Model (C = 200 pF, R = 0).
- Designed to facilitate incident-wave switching for line impedances of 25 Ω or greater.
- Distributed VCC and GND pins minimize noise generated by the simultaneous switching of outputs.
- Package options include Plastic Small-Outline (DW) packages and Standard Plastic 300-mil DIPs (NT).
Applications
The SN64BCT25244 is designed for use in various applications, including:
- 3-state memory address drivers.
- Clock drivers.
- Bus-oriented transceivers.
- Systems requiring high-speed data transmission and low noise.
Q & A
- What is the primary function of the SN64BCT25244?
The SN64BCT25244 is a 25-Ω octal buffer and line driver designed to improve the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented transceivers.
- What are the operating temperature ranges for the SN64BCT25244?
The device operates from -40°C to 85°C and 0°C to 70°C.
- How much current can the SN64BCT25244 sink?
The device can sink up to 188-mA IOL.
- What is the ESD protection level of the SN64BCT25244?
The ESD protection exceeds 2000 V per MIL-STD-883C, Method 3015, and exceeds 200 V using the Machine Model (C = 200 pF, R = 0).
- What package options are available for the SN64BCT25244?
The device is available in Plastic Small-Outline (DW) packages and Standard Plastic 300-mil DIPs (NT).
- How does the SN64BCT25244 minimize switching noise?
The device features distributed VCC and GND pins that minimize noise generated by the simultaneous switching of outputs.
- What is the propagation delay of the SN64BCT25244?
The propagation delay (tPLH, tPHL) is typically between 1 to 6 ns at VCC = 5 V and TA = 25°C.
- What is the high-impedance state behavior during power up and power down?
The outputs are in a high-impedance state during power up and power down while the supply voltage value is less than approximately 3 V.
- How does the output-enable (OE) input affect the device's operation?
When the output-enable (1OE and 2OE) inputs are low, the device transmits data from the A inputs to the Y outputs. When 1OE and 2OE are high, the outputs are in the high-impedance state.
- What are some common applications for the SN64BCT25244?
The device is commonly used in 3-state memory address drivers, clock drivers, and bus-oriented transceivers, as well as in systems requiring high-speed data transmission and low noise.
