LTC1323 - Single 5V AppleTalk® Transceiver
Features
- Single Chip Provides Complete LocalTalk®/AppleTalk Port
- Operates From a Single 5V Supply
- ESD Protection to ±10kV on Receiver Inputs and Driver Outputs
- Low Power: ICC = 2.4mA Typ
- Shutdown Pin Reduces ICC to 0.5µA Typ
- Receiver Keep-Alive Function: ICC = 65µA Typ
- Differential Driver Drives Either DifferentialAppleTalk or Single-Ended EIA562 Loads
- Drivers Maintain High Impedance in Three-State or with Power Off
- Thermal Shutdown Protection
- Drivers are Short-Circuit Protected
Typical Application
Description
The LTC®1323 is a multi-protocol line transceiver designed to operate on AppleTalk or EIA562-compatible single-ended networks while operating from a single 5V supply. There are two versions of the LTC1323 available: a 16-pin version designed to connect to an AppleTalk network, and a 24-pin version which also includes the additional single-ended drivers and receivers necessary to create an Apple-compatible serial port. An on-board charge pump generates a 5V supply which can be used to power external devices. Additionally, the 24-pin LTC1323 features a micropower keep-alive mode during which one of the single-ended receivers is kept active to monitor external wake-up signals. The LTC1323 draws only 2.4mA quiescent current when active, 65µA in receiver keep-alive mode, and 0.5µA in shutdown, making it ideal for use in battery-powered systems. The differential driver can drive either differential AppleTalk loads or conventional single-ended loads. The driver outputs three-state when disabled, during shutdown, in receiver keep-alive mode, or when the power is off. The driver outputs will maintain high impedance even with output common-mode voltages beyond the power supply rails. Both the driver outputs and receiver inputs are protected against ESD damage to ±10kV.Packaging
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LTC1323CS16#PBF | SO-16 | S | C | 05-08-1610 (S16) | Yes |
| LTC1323CS16#TRPBF | SO-16 | S | C | 05-08-1610 (S16) | Yes |
| LTC1323CSW#PBF | SW-24 | SW | C | 05-08-1620 (SW24) | Yes |
| LTC1323CSW#TRPBF | SW-24 | SW | C | 05-08-1620 (SW24) | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTC1323CS16#PBF | SO-16 | C | $5.60 | $4.40 | Yes | |
| LTC1323CS16#TRPBF | SO-16 | C | $4.46 | Yes | ||
| LTC1323CSW#PBF | SW-24 | C | $6.10 | $4.80 | Yes | |
| LTC1323CSW#TRPBF | SW-24 | C | $4.90 | Yes | ||
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.Click here to view our complete list of demo boards
Applications
- LocalTalk Peripherals
- Notebook/Palmtop Computers
- Battery-Powered Systems
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Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
