The ADM483E is a 5 V, low power data transceiver with ±15 kV ESD protection suitable for half-duplex communication on multipoint bus transmission lines. The ADM483E is designed for balanced data transmission and complies with TIA/EIA Standards RS-485 and RS-422, which allow up to 32 transceivers on a bus.

The ADM483E has a low current shutdown mode in which it consumes only 0.1 μA.

Because only one driver is enabled at any time, the output of a disabled or power-down driver is three-stated to avoid overloading the bus.

Drivers are short-circuit current-limited and are protected against excessive power dissipation by thermal shutdown circuitry that places their outputs into a high impedance state. The receiver input has a fail-safe feature that guarantees a logic high output if the input is open circuit.

The ADM483E is fully specified over the industrial temperature ranges and is available in 8-lead SOIC_N packages.

Applications

Low power RS-485 systems

Electrically harsh environments

EMI sensitive applications

DTE-DCE interface

Packet switching

Local area networks

Data Sheet, Rev. A, 1/08

Part#	Min Pos Supply	Pwr Supply (Vnom)	Full-Half Duplex	ESD-Protection	Data Rate	# of Nodes On Bus	Drvr/Rcvr Enable	Fail Safe	Isolation V (rms)	Available Packages	Price* (1000-4999)	Protocols
ADM2482E	+3	+3 to +5 & ISO +3	Full, Half	15 kV	16Mbps	256	Yes	Open, Short	2.5 kV	SOIC	$4.66	RS-422, RS-485
ADM2484E	+3	+3 to +5 & ISO +3	Full, Half	15 kV	500kbps	256	Yes	Open, Short	5 kV	SOIC	$3.04	RS-422, RS-485
ADM2487E	+3	+3 to +5 & ISO +3	Full, Half	15 kV	500kbps	256	Yes	Open, Short	2.5 kV	SOIC	$3.64	RS-422, RS-485
ADM2491E	+3	+3 to +5 & ISO +5	Full, Half	8 kV	16Mbps	32	Yes	Open	5 kV	SOIC	$4.76	RS-422, RS-485
ADN4667	+3	3.3	---	15 kV	400Mbps	-	Yes	-	-	SOIC, SOP	$1.16	RS-485/LVDS
ADN4668	+3	3.3	---	15 kV	400Mbps	-	Yes	-	-	SOIC, SOP	$1.15	RS-485/LVDS
ADM2490E	+2.7	+3 to +5 & ISO +5	Full	8 kV	16Mbps	32	No	Open	5 kV	SOIC	$4.55	RS-422, RS-485
ADM2483	+2.7	+3 to +5 & ISO +5	Half	---	500kbps	256	Yes	Open, Short	2.5 kV	SOIC	$3.04	RS-485
ADM2485	+2.7	+3 to +5 & ISO +5	Half	---	16Mbps	50	Yes	Open	2.5 kV	SOIC	$5.57	RS-422, RS-485
ADM2486	+2.7	+3 to +5 & ISO +5	Half	---	20Mbps	50	Yes	Open	2.5 kV	SOIC	$5.04	RS-485
ADM3070E	+3	3.3	Full	15 kV	250kbps	256	Yes	Open, Short	---	SOIC	$1.62	RS-422, RS-485
ADM3071E	+3	3.3	Full	15 kV	250kbps	256	No	Open, Short	---	SOIC	$1.57	RS-422, RS-485
ADM3488E	+3	3.3	Full	15 kV	250kbps	32	No	Open	---	SOIC	$1.32	RS-422, RS-485
ADM3488	+3	3.3	Full	---	250kbps	32	No	Open	---	SOIC	$0.91	RS-422, RS-485
ADM3074E	+3	3.3	Full	15 kV	500kbps	256	No	Open, Short	---	SOIC	$1.52	RS-422, RS-485
ADM3490	+3	3.3	Full	---	10Mbps	32	No	Open	---	SOIC	$1.01	RS-422, RS-485
ADM3491	+3	3.3	Full	---	10Mbps	32	Yes	Open	---	DIP, SOIC, SOP	$1.37	RS-422, RS-485
ADM3490E	+3	3.3	Full	15 kV	12Mbps	32	No	Open	---	SOIC	$1.37	RS-422, RS-485
ADM3491E	+3	3.3	Full	15 kV	12Mbps	32	Yes	Open	---	SOIC	$1.42	RS-422, RS-485
ADM3076E	+3	3.3	Full	15 kV	16Mbps	256	Yes	Open, Short	---	SOIC	$1.62	RS-422, RS-485
ADM3077E	+3	3.3	Full	15 kV	16Mbps	256	No	Open, Short	---	SOIC	$1.57	RS-422, RS-485
ADM3072E	+3	3.3	Half	15 kV	250kbps	256	Yes	Open, Short	---	SOIC	$1.52	RS-422, RS-485
ADM3483E	+3	3.3	Half	15 kV	250kbps	32	Yes	Open	---	SOIC	$1.32	RS-422, RS-485
ADM3493	+3	3.3	Half	---	250kbps	256	Yes	Open	---	SOIC	$0.96	RS-422, RS-485
ADM3483	+3	3.3	Half	---	250kbps	32	Yes	Open	---	SOIC	$0.91	RS-422, RS-485
ADM3073E	+3	3.3	Half	15 kV	500kbps	256	Yes	Open, Short	---	SOIC	$1.62	RS-422, RS-485
ADM3075E	+3	3.3	Half	15 kV	500kbps	256	Yes	Open, Short	---	SOIC	$1.52	RS-422, RS-485
ADM3486E	+3	3.3	Half	15 kV	2.5Mbps	32	Yes	Open	---	SOIC	$1.32	RS-422, RS-485
ADM3485	+3	3.3	Half	---	10Mbps	32	Yes	Open	---	SOIC	$1.01	RS-422, RS-485
ADM3485E	+3	3.3	Half	15 kV	12Mbps	50	Yes	Open	---	DIP, SOIC	$1.32	RS-422, RS-485
ADM3078E	+3	3.3	Half	15 kV	16Mbps	256	Yes	Open, Short	---	SOIC	$1.55	RS-422, RS-485
ADM488	+4.5	5	Full	---	250kbps	32	No	Open	---	DIP, SOIC	$1.11	RS-422, RS-485
ADM489	+4.5	5	Full	---	250kbps	32	Yes	Open	---	DIP, SOIC, SOP	$1.62	RS-422, RS-485
ADM483E	+4.5	5	Half	15 kV	250kbps	32	Yes	Open	---	DIP, SOIC	$1.27	RS-422, RS-485
ADM4854	+4.75	5	Full	---	115kbps	256	No	Open, Short	---	SOIC	$0.71	RS-422, RS-485
ADM4855	+4.75	5	Full	---	500kbps	256	No	Open, Short	---	SOIC	$0.71	RS-422, RS-485
ADM4856	+4.75	5	Full	---	2.5Mbps	256	No	Open, Short	---	SOIC	$0.71	RS-422, RS-485
ADM4857	+4.75	5	Full	---	10Mbps	256	No	Open, Short	---	SOIC	$0.71	RS-422, RS-485
ADM4850	+4.75	5	Half	---	115kbps	256	Yes	Open, Short	---	CSP, SOIC	$0.71	RS-422, RS-485
ADM487E	+4.75	5	Half	15 kV	250kbps	128	Yes	Open	---	SOIC	$1.32	RS-422, RS-485
ADM483	+4.75	5	Half	---	250kbps	32	Yes	Open	---	SOIC	$0.67	RS-422, RS-485
ADM4851	+4.75	5	Half	---	500kbps	256	Yes	Open, Short	---	CSP, SOIC	$0.71	RS-422, RS-485
ADM1487E	+4.75	5	Half	15 kV	2.5Mbps	128	Yes	Open	---	SOIC	$1.32	RS-422, RS-485
ADM485E	+4.75	5	Half	15 kV	2.5Mbps	32	Yes	Open	---	SOIC	$1.32	RS-422, RS-485
ADM4852	+4.75	5	Half	---	2.5Mbps	256	Yes	Open, Short	---	CSP, SOIC	$0.71	RS-422, RS-485
ADM485	+4.75	5	Half	---	5Mbps	32	Yes	Open	---	DIP, SOIC, SOP	$1.31	RS-422, RS-485
ADM4853	+4.75	5	Half	---	10Mbps	256	Yes	Open, Short	---	CSP, SOIC	$0.71	RS-422, RS-485
ADM1486	+4.75	5	Half	---	30Mbps	50	Yes	Open	---	SOIC	$2.07	RS-422, RS-485
ADM1485	+4.75	5	Half	---	30Mbps	32	Yes	Open	---	DIP, SOIC, SOP	$1.63	RS-422, RS-485

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