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| Part Number | Manufacturer | Description | Stock | Price in SGD | Buy |
| AM26C31IDR | TEXAS INSTRUMENTS | IC Driver Quad Transmitter RS-422 16-Pin SOIC | 5,000 | 1 ---- $0.4300 2500 ---- $0.4300/pc | |
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| Part Number | Manufacturer | Description | Stock | Price in SGD | Buy |
| DS75176BTN | NATIONAL SEMICONDUCTOR CORPORATION | IC 8-DIP Multipoint RS-485/RS-422 Transceivers OBSOLETE | 3 | 1 ---- $3.0000 $3.0000 | |
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| Part Number | Manufacturer | Description | Stock | Price in SGD | Buy |
| DS8922M | NATIONAL SEMICONDUCTOR CORPORATION | IC 16-SOIC RS-422 Dual Differential Line Driver and Receiver Pairs OBSOLETE | 2 | 1 ---- $3.0000 $3.0000 | |
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| Part Number | Manufacturer | Description | Stock | Price in SGD | Buy |
| LTC485CN8#PBF | LINEAR TECHNOLOGY | IC 8-DIP Low Power RS485 Interface Transceiver | 0 | 1 ---- $4.5000 5 ---- $4.0909/pc 10 ---- $3.7190/pc | |
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| Part Number | Manufacturer | Description | Stock | Price in SGD | Buy |
| MAX232ACSE+ | MAXIM INTEGRATED | IC Dual Transmitter/Receiver RS-232 SOIC-16 | 20 | 1 ---- $3.0000 20 ---- $2.0000/pc | |
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| Part Number | Manufacturer | Description | Stock | Price in SGD | Buy |
| MAX232EN | HTC TAEJIN TECHNOLOGY CO LTD 태진기술 | IC 16-DIP 5V Dual Channel RS-232 Drivers/Receivers | 5,015 | 1 ---- $0.4000 1000 ---- $0.4000/pc | |
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| Part Number | Manufacturer | Description | Stock | Price in SGD | Buy |
| MAX232N | TEXAS INSTRUMENTS | IC 16-DIP RS-232 Transceiver | 0 | 1 ---- $1.4000 $1.4000 | |
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| Part Number | Manufacturer | Description | Stock | Price in SGD | Buy |
| MAX232NSR | TEXAS INSTRUMENTS | IC 16-SOP Dual EIA RS-232 Driver/Transceiver | 0 | 1 ---- $1.5000 $1.5000 | |