Overview
The SN74LVT16245B, specifically the SN74LVT16245BDLG4, is a 16-bit (dual-octal) noninverting 3-state transceiver designed by Texas Instruments. This device is part of the Widebus Family and utilizes Advanced BiCMOS Technology (ABT) for 3.3-V operation, ensuring low static-power dissipation. It is capable of providing a TTL interface to a 5-V system environment, making it versatile for mixed-mode signal operations. The device is optimized for asynchronous communication between two data buses, with the logic levels of the direction-control (DIR) and output-enable (OE) inputs controlling the activation of the output ports or placing them in a high-impedance state.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 2.7 | - | 3.6 | V |
| VI Input Voltage Range | -0.5 | - | 7 | V |
| VO Output Voltage Range (High-Impedance or Power-Off State) | -0.5 | - | 7 | V |
| VIH High-Level Input Voltage | 2 | - | - | V |
| VIL Low-Level Input Voltage | 0.8 | - | - | V |
| IOH High-Level Output Current | -24 | - | -32 | mA |
| IOL Low-Level Output Current | 48 | - | 64 | mA |
| TA Operating Free-Air Temperature | -40 | - | 85 | °C |
| Package Type | SSOP (48 pins) | - | - | - |
Key Features
- Member of the Texas Instruments Widebus Family.
- State-of-the-Art Advanced BiCMOS Technology (ABT) Design for 3.3-V Operation and Low Static-Power Dissipation.
- Supports Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC).
- Supports Unregulated Battery Operation Down to 2.7 V.
- Typical VOLP (Output Ground Bounce) < 0.8 V at VCC = 3.3 V, TA = 25°C.
- Ioff and Power-Up 3-State Support Hot Insertion.
- Distributed VCC and GND Pins Minimize High-Speed Switching Noise.
- Flow-Through Architecture Optimizes PCB Layout.
- Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II.
- ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model, 200-V Machine Model, and 1000-V Charged-Device Model.
Applications
The SN74LVT16245B is designed for asynchronous communication between two data buses, making it suitable for various applications including:
- Personal Electronics: For interfacing devices operating at different voltage levels.
- Industrial: In systems requiring reliable and low-power data transmission.
- Enterprise: For data communication in mixed-voltage environments.
- Telecom: In telecommunications equipment where bidirectional data transmission is necessary).
Q & A
- What is the primary function of the SN74LVT16245B?
The SN74LVT16245B is a 16-bit noninverting 3-state transceiver designed for asynchronous communication between two data buses).
- What is the operating voltage range for the SN74LVT16245B?
The device operates with a VCC supply voltage range of 2.7 V to 3.6 V).
- Can the SN74LVT16245B handle mixed-mode signal operations?
Yes, it supports mixed-mode signal operations with 5-V input and output voltages while operating at 3.3-V VCC).
- What is the significance of the Ioff and power-up 3-state features?
These features support hot insertion by disabling the outputs and preventing damaging current backflow when the device is powered down or up).
- How does the device minimize high-speed switching noise?
The device uses distributed VCC and GND pins to minimize high-speed switching noise).
- What is the latch-up performance of the SN74LVT16245B?
The latch-up performance exceeds 100 mA per JESD 78, Class II).
- What level of ESD protection does the SN74LVT16245B offer?
The device offers ESD protection exceeding JESD 22 standards, including 2000-V Human-Body Model, 200-V Machine Model, and 1000-V Charged-Device Model).
- What is the typical output ground bounce (VOLP) of the SN74LVT16245B?
The typical VOLP is less than 0.8 V at VCC = 3.3 V and TA = 25°C).
- What is the flow-through architecture of the SN74LVT16245B?
The flow-through architecture optimizes PCB layout).
- Can the SN74LVT16245B operate with unregulated battery power?
Yes, it supports unregulated battery operation down to 2.7 V).
