Specification	LTC2857IDD-1#PBF

Data Rate	20 Mbps
Duplex	Full
Mounting Type	Surface Mount
Operating Temperature [Max]	85 °C
Operating Temperature [Min]	-40 C
Package / Case	8-WFDFN Exposed Pad
Protocol	RS422, RS485
Receiver Hysteresis	25 mV
Supplier Device Package	8-DFN (3x3)
Type	Transceiver
Voltage - Supply [Max]	5.5 V
Voltage - Supply [Min]	4.5 V

LTC2857 Series

Part	Receiver Hysteresis	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Duplex	Data Rate	Voltage - Supply [Max]	Voltage - Supply [Min]	Mounting Type	Protocol	Package / Case	Package / Case	Type
Analog Devices Inc./Maxim Integrated LTC2857HMS8-2#PBF	25 mV	125 °C	-40 C	8-MSOP	Full	250 KBd	5.5 V	4.5 V	Surface Mount	RS422 RS485	8-MSOP 8-TSSOP	0.118 in 3 mm Width	Transceiver
Analog Devices Inc./Maxim Integrated LTC2857CDD-1#PBF	25 mV	70 °C	0 °C	8-DFN (3x3)	Full	20 Mbps	5.5 V	4.5 V	Surface Mount	RS422 RS485	8-WFDFN Exposed Pad		Transceiver
Analog Devices Inc./Maxim Integrated LTC2857IMS8-2#TRPBF	25 mV	85 °C	-40 C	8-MSOP	Full	250 KBd	5.5 V	4.5 V	Surface Mount	RS422 RS485	8-MSOP 8-TSSOP	0.118 in 3 mm Width	Transceiver
Analog Devices Inc./Maxim Integrated LTC2857CMS8-2#PBF	25 mV	70 °C	0 °C	8-MSOP	Full	250 KBd	5.5 V	4.5 V	Surface Mount	RS422 RS485	8-MSOP 8-TSSOP	0.118 in 3 mm Width	Transceiver
Analog Devices Inc./Maxim Integrated LTC2857CMS8-1#TRPBF	25 mV	70 °C	0 °C	8-MSOP	Full	20 Mbps	5.5 V	4.5 V	Surface Mount	RS422 RS485	8-MSOP 8-TSSOP	0.118 in 3 mm Width	Transceiver
Analog Devices Inc./Maxim Integrated LTC2857CMS8-2#TRPBF	25 mV	70 °C	0 °C	8-MSOP	Full	250 KBd	5.5 V	4.5 V	Surface Mount	RS422 RS485	8-MSOP 8-TSSOP	0.118 in 3 mm Width	Transceiver
Analog Devices Inc./Maxim Integrated LTC2857IDD-1#PBF	25 mV	85 °C	-40 C	8-DFN (3x3)	Full	20 Mbps	5.5 V	4.5 V	Surface Mount	RS422 RS485	8-WFDFN Exposed Pad		Transceiver
Analog Devices Inc./Maxim Integrated LTC2857IMS8-1#TRPBF	25 mV	85 °C	-40 C	8-MSOP	Full	20 Mbps	5.5 V	4.5 V	Surface Mount	RS422 RS485	8-MSOP 8-TSSOP	0.118 in 3 mm Width	Transceiver
Analog Devices Inc./Maxim Integrated LTC2857HDD-2#TRPBF	25 mV	125 °C	-40 C	8-DFN (3x3)	Full	250 KBd	5.5 V	4.5 V	Surface Mount	RS422 RS485	8-WFDFN Exposed Pad		Transceiver
Analog Devices Inc./Maxim Integrated LTC2857CDD-2#PBF	25 mV	70 °C	0 °C	8-DFN (3x3)	Full	250 KBd	5.5 V	4.5 V	Surface Mount	RS422 RS485	8-WFDFN Exposed Pad		Transceiver

Pricing

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

Distributor	Package	Quantity	$	Updated

Digikey	N/A	197	$ 7.00	1m+
	Tube	1	$ 7.25	1m+
		10	$ 4.94
		25	$ 4.35
		100	$ 3.68
		250	$ 3.35
		500	$ 3.15
		1000	$ 2.99
		2500	$ 2.83
Newark	Each	1	$ 7.00	1m+
		10	$ 4.65
		25	$ 4.04
		50	$ 3.78
		100	$ 3.52
		363	$ 3.27
		605	$ 2.89

Description

General part information

LTC2857 Series

The LTC2856-1, LTC2856-2, LTC2857-1, LTC2857-2, LTC2858-1 and LTC2858-2 are low power, RS485/RS422 transceivers operating on 5V supplies at maximum data rates of 20Mbps or 250kbps for low EMI. The receiver has a one-eighth unit load, supporting up to 256 nodes per bus (C, I-Grade), and a fail-safe feature that guarantees a high output state under conditions of floating or shorted inputs.The driver maintains a high output impedance over the entire common mode range when disabled or when the supply is removed. Excessive power dissipation caused by bus contention or a fault is prevented by current limiting all outputs and by thermal shutdown.Enhanced ESD protection allows these parts to withstand ±15kV (human body model) on the transceiver interface pins without latch-up or damage.Part NumberMAX Data Rate (Mbps)DuplexPackageLTC2856-120HalfMSOP-8, DFN-8LTC2856-20.25HalfMSOP-8, DFN-8LTC2857-120FullMSOP-8, DFN-8LTC2857-20.25FullMSOP-8, DFN-8LTC2858-120FullMSOP-10, DFN-10LTC2858-20.25FullMSOP-10, DFN-10ApplicationsLow Power RS485/RS422 TransceiverLevel TranslatorBackplane Transceiver

Documents

Technical documentation and resources

Technical Data Sheet EN

Datasheet

R521 Reliability Data

Reliability Data