Specification	ISO1500DBQ

Data Rate	1 Mbps
Duplex	Half
Mounting Type	Surface Mount
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 °C
Package / Case	0.154 in
Package / Case	16-SSOP
Package / Case	3.9 mm
Protocol	RS422, RS485
Receiver Hysteresis	45 mV
Supplier Device Package	16-SSOP
Type	Transceiver
Voltage - Supply [Max]	1.89 V, 5.5 V
Voltage - Supply [Min]	2.25 V, 1.71 V

ISO1500 Series

1-Mbps, half-duplex, 3-kVrms ultra-small isolated RS-485 & RS-422 transceiver

Part	Receiver Hysteresis	Voltage - Supply [Max]	Voltage - Supply [Min]	Duplex	Package / Case	Package / Case	Package / Case	Operating Temperature [Min]	Operating Temperature [Max]	Data Rate	Protocol	Mounting Type	Supplier Device Package	Type	Supplied Contents	Function	Utilized IC / Part
Texas Instruments ISO1500DBQ	45 mV	1.89 V 5.5 V	1.71 V 2.25 V	Half	0.154 in	16-SSOP	3.9 mm	-40 °C	125 °C	1 Mbps	RS422 RS485	Surface Mount	16-SSOP	Transceiver
Texas Instruments ISO1500DBQEVM														Interface	Board(s)	RS485	ISO1500

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 4.82
		10	$ 4.33
		75	$ 4.09
		150	$ 3.55
		300	$ 3.36
		525	$ 3.02
		1050	$ 2.55
		2550	$ 2.42
Texas Instruments	TUBE	1	$ 3.64
		100	$ 3.19
		250	$ 2.23
		1000	$ 1.80

Description

General part information

ISO1500 Series

The ISO1500 device is a galvanically-isolated differential line transceiver for TIA/EIA RS-485 and RS-422 applications. This device has a 3-channel digital isolator and an RS-485 transceiver in an ultra-small 16-pin SSOP package. The bus pins of this transceiver are protected against IEC ESD contact discharge and IEC EFT events. The receiver output has a failsafe for bus open, short, and idle conditions. The small solution size of ISO1500 greatly reduces the board space required compared to other integrated isolated RS-485 solutions or discrete implementation with optocouplers and non-isolated RS-485 transceiver.

The device is used for long distance communications. Isolation breaks the ground loop between the communicating nodes, allowing for a much larger common mode voltage range. The symmetrical isolation barrier of each device is tested to provide 3000 VRMSof isolation for 1 minute per UL 1577 between the bus-line transceiver and the logic-level interface.

The ISO1500 device can operate from 1.71 V to 5.5 V on side 1 which lets the devices interface with low-voltage FPGAs and ASICs. The supply voltage on side 2 is from 4.5 V to 5.5 V. This device supports a wide operating ambient temperature range from –40°C to +125°C.