DocumentationDatasheet
Reliability Data
Product Selector Card
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Features
- Low Supply Current: 500µA
- 0.2µA Supply Current in SHUTDOWN
- 50µA Supply Current in RECEIVER ALIVE Mode
- ESD Protection Over ±10kV
- Operates from a Single 5V Supply
- Uses Small Capacitors: 0.1µF
- Operates to 120k Baud
- Three-State Outputs Are High Impedance When Off
- Output Overvoltage Does Not Force Current
- RS232 I/O Lines Can Be Forced to ±25V Without Damage
- Flowthrough Architecture
Typical Application
Description
The LTC1338 is a 5-driver/3-receiver RS232 transceiver with very low supply current. In the no load condition, the supply current is only 500µA. The charge pump only requires four 0.1µF capacitors.In SHUTDOWN mode, the supply current is further reduced to 0.2µA. In RECEIVER ALIVE mode, all three receivers are kept alive and the supply current is 50µA. All RS232 outputs assume a high impedance state in SHUTDOWN and with the power off.
The LTC1338 is fully compliant with all data rate and overvoltage RS232 specifications. The transceiver can operate up to 120k baud with a 2500pF, 3kohms load. Both driver outputs and receiver inputs can be forced to ±25V without damage, and can survive multiple ±10kV ESD strikes.
NW-28,SSOP-28,SW-28
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC1338CG#PBF | SSOP | 28 | C | $6.75 | $5.45 |
| LTC1338CG#TRPBF | SSOP | 28 | C | $5.55 | |
| LTC1338CNW#PBF | PDIP | 28 | C | $6.25 | $5.05 |
| LTC1338CSW#PBF | SO | 28 | C | $6.25 | $5.05 |
| LTC1338CSW#TRPBF | SO | 28 | C | $5.15 | |
| LTC1338IG#PBF | SSOP | 28 | I | $7.45 | $5.85 |
| LTC1338IG#TRPBF | SSOP | 28 | I | $5.95 | |
| LTC1338INW#PBF | PDIP | 28 | I | $6.95 | $5.60 |
| LTC1338ISW#PBF | SO | 28 | I | $6.95 | $5.60 |
| LTC1338ISW#TRPBF | SO | 28 | I | $5.70 | |
| LTC1338CG | SSOP | 28 | C | $13.50 | $10.90 |
| LTC1338CG#TR | SSOP | 28 | C | $11.10 | |
| LTC1338CNW | PDIP | 28 | C | $12.50 | $10.10 |
| LTC1338CSW | SO | 28 | C | $12.50 | $10.10 |
| LTC1338CSW#TR | SO | 28 | C | $10.30 | |
| LTC1338IG | SSOP | 28 | I | $14.90 | $11.70 |
| LTC1338IG#TR | SSOP | 28 | I | $11.90 | |
| LTC1338ISW | SO | 28 | I | $13.90 | $11.20 |
| LTC1338ISW#TR | SO | 28 | I | $11.40 | |
| LTC1338INW | PDIP | 28 | I | $13.90 | $11.20 |
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.