SN74LVCH16T245-EP
- Control Inputs VIH/VIL Levels Are
Referenced to VCCA Voltage - VCC Isolation Feature – If Either VCC
Input Is at GND, All Outputs Are in the
High-Impedance State - Overvoltage-Tolerant Inputs/Outputs Allow
Mixed-Voltage-Mode Data Communications - Fully Configurable Dual-Rail Design Allows
Each Port to Operate Over the Full 1.65-V to
5.5-V Power-Supply Range - Bus Hold on Data Inputs Eliminates the Need
for External Pullup/Pulldown Resistors - Ioff Supports Partial-Power-Down
Mode Operation - Latch-Up Performance Exceeds 100 mA
Per JESD 78, Class II - ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)
SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS
- Controlled Baseline
- One Assembly/Test Site
- One Fabrication Site
- Available in Military (–55°C/125°C)
Temperature Range(1) - Extended Product Life Cycle
- Extended Product-Change Notification
- Product Traceability
(1) Custom temperature ranges available
This 16-bit noninverting bus transceiver uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.65 V to 5.5 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65 V to 5.5 V. This allows for universal low-voltage bidirectional translation between any of the 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes.
The SN74LVCH16T245 is designed so that the control pins (1DIR, 2DIR, 1OE, and 2OE) are supplied by VCCA.
The SN74LVCH16T245 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input and the output-enable (OE) input activate either the B-port outputs or the A-port outputs or place both output ports into the high-impedance mode. The device transmits data from the A bus to the B bus when the B-port outputs are activated, and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports is always active and must have a logic HIGH or LOW level applied to prevent excess ICC and ICCZ.
Active bus-hold circuitry holds unused or undriven data inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.
The VCC isolation feature ensures that if either VCC input is at GND, then all outputs are in the high-impedance state. The bus-hold circuitry on the powered-up side always stays active.
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | 16-Bit Dual-Supply Bus Tranceiver W/ Configurable Voltage Translation . 数据表 (Rev. A) | 2013-11-6 | |||
| * | 辐射与可靠性报告 | CLVCH16T245MDGGREP Reliability Report | 2011-8-25 | |||
| * | VID | SN74LVCH16T245-EP VID V6209605 | 2016-6-21 | |||
| 应用手册 | 了解电平转换器中的瞬态驱动强度与直流驱动强度 | PDF | HTML | PDF | HTML | 2026-8-13 | ||
| 应用手册 | 原理图检查清单 - 使用自动双向转换器进行设计的指南 | PDF | HTML | 英语版 | PDF | HTML | 2024-12-3 | |
| 应用手册 | 原理图检查清单 - 使用固定或方向控制转换器进行设计的指南 | PDF | HTML | 英语版 | PDF | HTML | 2024-10-3 | |
| 选择指南 | Voltage Translation Buying Guide (Rev. A) | 2021-4-15 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| TSSOP (DGG) | 48 | Ultra Librarian |
| TVSOP (DGV) | 48 | Ultra Librarian |