SN74LVCE161284
- Auto-Power-Up Feature Prevents Printer Errors When Printer Is Turned On, But No Valid Signal Is at A9–A13 Pins
- 1.4-k
Pullup Resistors Integrated on All Open-Drain Outputs Eliminate the Need for Discrete Resistors - Designed for the IEEE Std 1284-I (Level-1 Type) and IEEE Std 1284-II (Level-2 Type) Electrical Specifications
- Flow-Through Architecture Optimizes PCB Layout
- Ioff and Power-Up 3-State Support Hot Insertion
- Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
- ESD Protection
- ±4 kV - Human-Body Model
- ±8 kV - IEC 61000-4-2, Contact Discharge (Connector Pins)
- ±15 kV - IEC 61000-4-2, Air-Gap Discharge (Connector Pins)
- ±15 kV - Human-Body Model (Connector Pins)
The SN74LVCE161284 is designed for 3-V to 3.6-V VCC operation. This device provides asynchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements.
This device has eight bidirectional bits; data can flow in the A-to-B direction when the direction-control input (DIR) is high and in the B-to-A direction when DIR is low. This device also has five drivers that drive the cable side, and four receivers. The SN74LVCE161284 has one receiver dedicated to the HOST LOGIC line and a driver to drive the PERI LOGIC line.
The output drive mode is determined by the high-drive (HD) control pin. When HD is high, the outputs are in a totem-pole configuration, and in an open-drain configuration when HD is low. This meets the drive requirements as specified in the IEEE Std 1284-I (level-1 type) and IEEE Std 1284-II (level-2 type) parallel peripheral-interface specifications. Except for HOST LOGIC IN and peripheral logic out (PERI LOGIC OUT), all cable-side pins have a 1.4-k integrated pullup resistor. The pullup resistor is switched off if the associated output driver is in the low state or if the output voltage is above VCC CABLE. If VCC CABLE is off, PERI LOGIC OUT is set to low.
The device has two supply voltages. VCC is designed for 3-V to 3.6-V operation. VCC CABLE supplies the inputs and output buffers of the cable side only and is designed for 3-V to 3.6-V and for 4.7-V to 5.5-V operation. Even when VCC CABLE is 3 V to 3.6 V, the cable-side I/O pins are 5-V tolerant.
The Y outputs (Y9–Y13) stay in the high state after power on until an associated input (A9–A13) goes high. When an associated input goes high, all Y outputs are activated, and noninverting signals of the associated inputs are driven through Y outputs. This special feature prevents printer-system errors caused by deasserting the BUSY signal in the cable at power on.
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 | SN74LVCE161284 数据表 | 2004-1-19 | |||
| 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 | |
| 应用手册 | Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) | PDF | HTML | 2024-7-3 | |||
| 选择指南 | Voltage Translation Buying Guide (Rev. A) | 2021-4-15 |
设计与开发
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| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| TSSOP (DGG) | 48 | Ultra Librarian |
| SSOP (DL) | 48 | Ultra Librarian |