Texas Instruments SN65LBC176D, SN65LBC176DR, SN65LBC176P, SN65LBC176QD, SN65LBC176QDR Datasheet

SN55LBC176, SN65LBC176, SN65LBC176Q, SN75LBC176 DIFFERENTIAL BUS TRANSCEIVERS

SLLS067F ± AUGUST 1990 ± REVISED JANUARY 2000

DBidirectional Transceiver

DMeet or Exceed the Requirements of ANSI Standard RS-485 and

ISO 8482:1987(E)

DHigh-Speed Low-Power LinBiCMOS

Circuitry

DDesigned for High-Speed Operation in Both Serial and Parallel Applications

D, JG, OR P PACKAGE

(TOP VIEW)

R			1	8		VCC
RE			2	7		B
DE			3	6		A
D			4	5		GND

D	Low Skew		FK PACKAGE
D Designed for Multipoint Transmission on				(TOP VIEW)
	Long Bus Lines in Noisy Environments					CC
			NC	R NC V NC
D Very Low Disabled Supply-Current
	Requirements . . . 200 A Maximum	NC	3	2	1	20 19	NC
D Wide Positive and Negative Input/Output			4			18
		RE	5			17	B
	Bus Voltage Ranges
		NC	6			16	NC
	Driver Output Capacity . . . ± 60 mA
D		DE	7			15	A
D	Thermal-Shutdown Protection	NC	8			14	NC
D Driver Positive-and Negative-Current			9	10 11 12 13
	Limiting		NC	D	NC	GND NC
D Open-Circuit Fail-Safe Receiver Design
D Receiver Input Sensitivity . . . ± 200 mV Max

D Receiver Input Hysteresis . . . 50 mV Typ	NC ± No internal connection
D Operate From a Single 5-V Supply
D Glitch-Free Power-Up and Power-Down		Function Tables
Protection			DRIVER
D Available in Q-Temp Automotive
	INPUT		ENABLE		OUTPUTS
HighRel Automotive Applications	D		DE
					A	B
Configuration Control / Print Support	H		H		H	L
Qualification to Automotive Standards	L		H		L	H
	X		L		Z	Z

description

The SN55LBC176, SN65LBC176, SN65LBC176Q, and SN75LBC176 differential bus transceivers are monolithic, integrated circuits designed for bidirectional data communication on multipoint bus-transmission lines. They are designed for balanced transmission lines and meet ANSI Standard RS-485 and ISO 8482:1987(E).

RECEIVER

	DIFFERENTIAL INPUTS		ENABLE		OUTPUT
	A ± B		RE		R
	VID ≥	0.2 V	L		H
	± 0.2 V < VID < 0.2 V		L		?
	VID ≤ ± 0.2 V		L		L
		X	H		Z
	Open		L		H
H = high level,		L = low level,	? = indeterminate,
X = irrelevant,		Z = high impedance (off)

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

LinBiCMOS and LinASIC are trademarks of Texas Instruments Incorporated.

PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

Copyright 2000, Texas Instruments Incorporated

On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters.

POST OFFICE BOX 655303 •DALLAS, TEXAS 75265

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SN55LBC176, SN65LBC176, SN65LBC176Q, SN75LBC176

DIFFERENTIAL BUS TRANSCEIVERS

SLLS067F ± AUGUST 1990 ± REVISED JANUARY 2000

description (continued)

The SN55LBC176, SN65LBC176, SN65LBC176Q, and SN75LBC176 combine a 3-state, differential line driver and a differential input line receiver, both of which operate from a single 5-V power supply. The driver and receiver have active-high and active-low enables, respectively, which can externally connect together to function as a direction control. The driver differential outputs and the receiver differential inputs connect internally to form a differential input/output (I/O) bus port that is designed to offer minimum loading to the bus whenever the driver is disabled or VCC = 0. This port features wide positive and negative common-mode voltage ranges, making the device suitable for party-line applications. Very low device supply current can be achieved by disabling the driver and the receiver. Both the driver and receiver are available as cells in the Texas Instruments LinASIC Library.

These transceivers are suitable for ANSI Standard RS-485 and ISO 8482:1987 (E) applications to the extent that they are specified in the operating conditions and characteristics section of this data sheet. Certain limits contained in the ANSI Standard RS-485 and ISO 8482:1987 (E) are not met or cannot be tested over the entire military temperature range.

The SN55LBC176 is characterized for operation from ±55°C to 125°C. The SN65LBC176 is characterized for operation from ±40°C to 85°C, and the SN65LBC176Q is characterized for operation from ±40°C to 125°C. The SN75LBC176 is characterized for operation from 0°C to 70°C.

logic symbol²					logic diagram (positive logic)
	3				3
DE		EN1			DE
	2
RE		EN2			4
					D
			6		2
				A	RE	6
	4		1		1		A
D			7
				B		7	Bus
			1		R		B
R	1	2

²This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.

2	POST OFFICE BOX 655303 •DALLAS, TEXAS 75265

SN55LBC176, SN65LBC176, SN65LBC176Q, SN75LBC176

DIFFERENTIAL BUS TRANSCEIVERS

SLLS067F ± AUGUST 1990 ± REVISED JANUARY 2000

schematics of inputs and outputs

EQUIVALENT OF EACH INPUT	TYPICAL OF A AND B I/O PORTS	TYPICAL OF RECEIVER OUTPUT
	VCC	VCC
	VCC
	100 kΩ NOM	3 kΩ
	A Port Only	NOM
	A or B
Input		Output
	18 kΩ
	NOM
	100 kΩ NOM	1.1 kΩ
	B Port Only
		NOM

POST OFFICE BOX 655303 •DALLAS, TEXAS 75265

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SN55LBC176, SN65LBC176, SN65LBC176Q, SN75LBC176

DIFFERENTIAL BUS TRANSCEIVERS

SLLS067F ± AUGUST 1990 ± REVISED JANUARY 2000

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)²

Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .			. . . . . . . . . . . . . . . . . . . . . . 7	V
Voltage range at any bus terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .			. . . . . . . . . . . . . ±10 V to 15	V
Input voltage, VI (D, DE, R, or	RE)	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . ±0.3 V to VCC + 0.5	V
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .			See Dissipation Rating Table
Operating free-air temperature range, TA: SN55LBC176 . . . . . . . . . . . . . . . . . . .			. . . . . . . . . . . ±55°C to 125°C
		SN65LBC176 . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . . ±40°C to 85°C
		SN65LBC176Q . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . ±40°C to 125°C
		SN75LBC176 . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .			. . . . . . . . . . . ±65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . .			. . . . . . . . . . . . . . . . . . . 260°C

²Stresses beyond those listed under ªabsolute maximum ratingsº may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under ªrecommended operating conditionsº is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: All voltage values, except differential I/O bus voltage, are with respect to network ground terminal.

			DISSIPATION RATING TABLE
	PACKAGE	TA ≤ 25°C	DERATING FACTOR	TA = 70°C	TA = 85°C	TA = 110°C
		POWER RATING	ABOVE TA = 25°C	POWER RATING	POWER RATING	POWER RATING
	D	725 mW	5.8 mW/°C	464 mW	377 mW	Ð
	FK	1375 mW	11.0 mW/°C	880 mW	715 mW	440 mW
	JG	1050 mW	8.4 mW/°C	672 mW	546 mW	210 mW
	P	1000 mW	8.0 mW/°C	640 mW	520 mW	Ð

recommended operating conditions

				MIN	NOM	MAX	UNIT
Supply voltage, VCC				4.75	5	5.25	V
Voltage at any bus terminal (separately or common mode), VI or VIC						12	V
						± 7
High-level input voltage, VIH	D, DE, and	RE		2			V
Low-level input voltage, VIL	D, DE, and	RE				0.8	V
Differential input voltage, VID (see Note 2)						± 12	V
High-level output current, IOH	Driver					± 60	mA
	Receiver					± 400	A
Low-level output current, IOL	Driver					60	mA
	Receiver					8
	SN55LBC176			± 55		125
Operating free-air temperature, TA	SN65LBC176			± 40		85	°C
	SN65LBC176Q			± 40		125
	SN75LBC176			0		70
NOTE 2: Differential input /output bus voltage is measured at the noninverting terminal A with respect to the inverting terminal B.

4	POST OFFICE BOX 655303 •DALLAS, TEXAS 75265

SN55LBC176, SN65LBC176, SN65LBC176Q, SN75LBC176

DIFFERENTIAL BUS TRANSCEIVERS

SLLS067F ± AUGUST 1990 ± REVISED JANUARY 2000

DRIVER SECTION

electrical characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)

	PARAMETER	TEST CONDITIONS			MIN	MAX	UNIT
VIK	Input clamp voltage	II = ± 18 mA				± 1.5	V
VO	Output voltage	IO = 0			0	6	V
| VOD1 |	Differential output voltage	IO = 0			1.5	6	V
				55LBC176,
| VOD2 |	Differential output voltage	RL = 54 Ω,	See Figure 1,	65LBC176,	1.1		V
		See Note 3		65LBC176Q
				75LBC176	1.5	5
				55LCB176,
VOD3	Differential output voltage	Vtest = ± 7 V to 12 V,	See Figure 2,	65LCB176,	1.1		V
		See Note 3		65LBC176Q
				75LBC176	1.5	5
| VOD |	Change in magnitude of differential					± 0.2	V
	output voltage ²
VOC	Common-mode output voltage	RL = 54 Ω or 100 Ω,	See Figure 1			3	V
						± 1
| VOC |	Change in magnitude of					± 0.2	V
	common-mode output voltage²
IO	Output current	Output disabled,	VO = 12 V			1	mA
		See Note 4	VO = ± 7 V			± 0.8
IIH	High-level input current	VI = 2.4 V				± 100	µA
IIL	Low-level input current	VI = 0.4 V				± 100	µA
		VO = ± 7 V				± 250
IOS	Short-circuit output current	VO = 0				± 150	mA
		VO = VCC				250
		VO = 12 V
				55LBC176,		1.75
			Receiver disabled	65LBC176Q
			and driver enabled	65LBC176,		1.5
		VI = 0 or VCC,		75LBC176
ICC	Supply current						mA
		No load		55LBC176,		0.25
			Receiver and driver	65LBC176Q
			disabled	65LBC176,		0.2
				75LBC176

² | VOD | and | VOC | are the changes in magnitude of VOD and VOC, respectively, that occur when the input changes from a high level to a low level.

NOTES: 3. This device meets the ANSI Standard RS-485 VOD requirements above 0°C only.

4. This applies for both power on and off; refer to ANSI Standard RS-485 for exact conditions.

POST OFFICE BOX 655303 •DALLAS, TEXAS 75265

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