LTC1334 - Single 5V RS232/RS485 Multiprotocol Transceiver

LTC1334 - Single 5V RS232/RS485 Multiprotocol Transceiver - Linear Technology（凌力尔特）

The LTC1334 is a low power CMOS bidirectional transceiver featuring two reconfigurable interface ports. It can be configured as two RS485 differential ports, as two dual RS232 single-ended ports or as one RS485 differential port and one dual RS232 single-ended port. An onboard charge pump requires four 0.1µF capacitors to generate boosted positive and negative supplies, allowing the RS232 drivers to meet the RS232 ±5V output swing requirement with only a single 5V supply. A shutdown mode reduces the ICC supply current to 10µA. The RS232 transceivers are in full compliance with RS232 specifications. The RS485 transceivers are in full compliance with RS485 and RS422 specifications. All interface drivers feature short-circuit and thermal shutdown protection. An enable pin allows RS485 driver outputs to be forced into high impedance, which is maintained even when the outputs are forced beyond supply rails or power is off. Both driver outputs and receiver inputs feature ±10kV ESD protection. A loopback mode allows the driver outputs to be connected back to the receiver inputs for diagnostic self-test.

Four RS232 Transceivers or Two RS485 Transceivers on One Chip

Operates from a Single 5V Supply

Withstands Repeated ±10kV ESD Pulses

Uses Small Charge Pump Capacitors: 0.1µF

Low Supply Current: 8mA Typical

10µA Supply Current in Shutdown

Self-Testing Capability in Loopback Mode

Power-Up/Down Glitch-Free Outputs

Driver Maintains High Impedance in Three-State, Shutdown or with Power Off

Thermal Shutdown Protection

Receiver Inputs Can Withstand ±25V

Low Power RS485/RS422/RS232/EIA562 Interface

Software-Selectable Multiprotocol Interface Port

Cable Repeaters

Level Translators

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LTC1334CG	SSOP-28	C	$8.25	$6.90
LTC1334CG#PBF	SSOP-28	C	$8.25	$6.90
LTC1334CG#TR	SSOP-28	C		$7.00
LTC1334CG#TRPBF	SSOP-28	C		$7.00
LTC1334CNW	NW-28	C	$8.15	$6.50
LTC1334CNW#PBF	NW-28	C	$8.15	$6.50
LTC1334CSW	SW-28	C	$8.15	$6.50
LTC1334CSW#PBF	SW-28	C	$8.15	$6.50
LTC1334CSW#TR	SW-28	C		$6.60
LTC1334CSW#TRPBF	SW-28	C		$6.60
LTC1334IG	SSOP-28	I	$9.40	$7.90
LTC1334IG#PBF	SSOP-28	I	$9.40	$7.90
LTC1334IG#TR	SSOP-28	I		$8.00
LTC1334IG#TRPBF	SSOP-28	I		$8.00
LTC1334INW	NW-28	I	$9.50	$7.60
LTC1334INW#PBF	NW-28	I	$9.50	$7.60
LTC1334ISW	SW-28	I	$9.50	$7.60
LTC1334ISW#PBF	SW-28	I	$9.50	$7.60
LTC1334ISW#TR	SW-28	I		$7.70
LTC1334ISW#TRPBF	SW-28	I		$7.70

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