DATA SHEET
SN74LVC240A Octal Buffer/Driver with 3-State Outputs
1 Features
- Operates From 1.65 V to 3.6 V
- Inputs Accept Voltages to 5.5 V
- Max tpd of 6.5 ns at 3.3 V
- Typical VOLP (Output Ground Bounce)
<0.8 V at VCC = 3.3 V, TA = 25°C - Typical VOHV (Output VOH Undershoot)
>2 V at VCC = 3.3 V, TA = 25°C - Supports Mixed-Mode Signal Operation on All Ports (5-V Input/Output Voltage With
3.3-V VCC) - Ioff Supports Live Insertion, Partial-Power-Down Mode, and Back-Drive Protection
- Latch-Up Performance Exceeds 250 mA Per JESD 17
- ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)
2 Applications
- Servers
- PCs and Notebooks
- Network Switches
- Wearable Health and Fitness Devices
- Telecom Infrastructures
- Electronic Points of Sale
Description
This octal buffer/driver is designed for 1.65-V to 3.6-V VCC operation.
The SN74LVC240A is designed specifically to improve the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters.
Device Information(1)
| PART NUMBER | PACKAGE | BODY SIZE |
|---|---|---|
| SN74LVC240A | SSOP (20) | 7.20 mm × 5.30 mm |
| TVSOP (20) | 5.00 mm × 4.40 mm | |
| SOIC (20) | 12.80 mm × 7.50 mm | |
| SOP (20) | 12.60 mm × 5.30 mm | |
| TSSOP (20) | 6.50 mm × 4.40 mm |
- For all available packages, see the orderable addendum at the end of the data sheet.
3 Simplified Schematic
4 Revision History
Changes from K Revision (February 2005) to L Revision
- Updated document to new TI data sheet standards.Go
- Deleted Ordering Information table.Go
- Updated Ioff bullet in Features list.Go
- Added Applications. Go
- Added Device Information table.Go
- Added Handling Ratings table. Go
- Changed MAX ambient temperature to 125°C in Recommended Operating Conditions table.Go
- Added Thermal Information table.Go
- Added –40°C to 125°C temperature range to Electrical Characteristics table.Go
- Added Switching Characteristics table for –40°C to 125°C temperature range.Go
- Added Typical Characteristics. Go
- Added Detailed Description section.Go
- Added Application and Implementation section.Go
5 Pin Configuration and Functions
Pin Functions
| PIN | I/O | DESCRIPTION | |
|---|---|---|---|
| NO. | NAME | ||
| 1 | 1OE | I | Output Enable 1 |
| 2 | 1A1 | I | 1A1 Input |
| 3 | 2Y4 | O | 2Y4 Output |
| 4 | 1A2 | I | 1A2 Input |
| 5 | 2Y3 | O | 2Y3 Output |
| 6 | 1A3 | I | 1A3 Input |
| 7 | 2Y2 | O | 2Y2 Output |
| 8 | 1A4 | I | 1A4 Input |
| 9 | 2Y1 | O | 2Y1 Output |
| 10 | GND | — | Ground Pin |
| 11 | 2A1 | I | 2A1 Input |
| 12 | 1Y4 | O | 1Y4 Output |
| 13 | 2A2 | I | 2A2 Input |
| 14 | 1Y3 | O | 1Y3 Output |
| 15 | 2A3 | I | 2A3 Input |
| 16 | 1Y2 | O | 1Y2 Output |
| 17 | 2A4 | I | 2A4 Input |
| 18 | 1Y1 | O | 1Y1 Output |
| 19 | 2OE | I | Output Enable 2 |
| 20 | VCC | — | Power Pin |