SCES770A December 2008 – March 2017 SN74LVC8T245-EP
PRODUCTION DATA.
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 5 Description (continued)
- 6 Pin Configuration and Functions
-
7 Specifications
- 7.1 Absolute Maximum Ratings
- 7.2 ESD Ratings
- 7.3 Recommended Operating Conditions
- 7.4 Thermal Information PW, DW and RHL
- 7.5 Electrical Characteristics
- 7.6 Switching Characteristics
- 7.7 Switching Characteristics
- 7.8 Switching Characteristics
- 7.9 Switching Characteristics
- 7.10 Operating Characteristics
- 8 Parameter Measurement Information
- 9 Detailed Description
- 10Application and Implementation
- 11Power Supply Recommendations
- 12Layout
- 13Device and Documentation Support
- 14Mechanical, Packaging, and Orderable Information
封裝選項
機械數據 (封裝 | 引腳)
散熱焊盤機械數據 (封裝 | 引腳)
訂購信息
1 Features
- Control Inputs VIH/VIL Levels Are Referenced to VCCA Voltage
- VCC Isolation Feature – If Either VCC Input Is at GND, All Are in the High-Impedance State
- Fully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.65-V to 5.5-V Power-Supply Range
- Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
- ESD Protection Exceeds JESD 22
- 4000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)
2 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
3 Description
This 8-bit noninverting bus transceiver uses two separate configurable power-supply rails. The SN74LVC8T245-EP is optimized to operate with VCCA and VCCB set at 1.65 V to 5.5 V. 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 5.5-V voltage nodes.
The SN74LVC8T245-EP 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.
The SN74LVC8T245-EP is designed so that the control pins (DIR and OE) are supplied by VCCA.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| SN74LVC8T245-EP | TSSOP (24) | 4.40 mm × 7.80 mm |
| SOIC (24) | 7.50 mm × 15.40 mm | |
| VQFN (24) | 3.50 mm × 5.50 mm |
- For all available packages, see the orderable addendum at the end of the data sheet.
Logic Diagram (Positive Logic)
