SN65LBC174A_07 Datasheet, PDF (1/19 Pages) Texas Instruments – QUADRUPLE RS-485 DIFFERENTIAL LINE DRIVERS

SN65LBC174A, SN75LBC174A
QUADRUPLE RSĆ485 DIFFERENTIAL LINE DRIVERS
D Designed for TIA/EIA-485, TIA/EIA-422 and
ISO 8482 Applications
D Signaling Rates^† up to 30 Mbps
D Propagation Delay Times < 11 ns
D Low Standby Power Consumption
1.5 mA Max
D Output ESD Protection Exceeds 13 kV
SLLS446C − OCTOBER 2000 − REVISED MAY 2003
D Driver Positive- and Negative-Current
Limiting
D Power-Up and Power-Down Glitch-Free for
Line Insertion Applications
D Thermal Shutdown Protection
D Industry Standard Pin-Out, Compatible
With SN75174, MC3487, DS96174, LTC487,
and MAX3042
description
The SN65LBC174A and SN75LBC174A are quadruple differential line drivers with 3-state outputs, designed
for TIA/EIA-485 (RS-485), TIA/EIA-422 (RS-422), and ISO 8482 applications.
These devices are optimized for balanced multipoint bus transmission at signalling rates up to 30 million bits
per second. The transmission media may be printed-circuit board traces, backplanes, or cables. The ultimate
rate and distance of data transfer is dependent upon the attenuation characteristics of the media and the noise
coupling to the environment.
N PACKAGE
(TOP VIEW)
1A 1
1Y 2
1Z 3
1,2EN 4
2Z 5
2Y 6
2A 7
GND 8
16 V_CC
15 4A
14 4Y
13 4Z
12 3,4EN
11 3Z
10 3Y
9 3A
1A
1Y
1Z
1,2EN
2Z
2Y
2A
GND
16-DW PACKAGE
(TOP VIEW)
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
logic diagram (positive logic)
V_CC
4A
4Y
4Z
3,4EN
3Z
3Y
3A
1A ¹
1,2EN ⁴
2A ⁷
3A ⁹
3,4EN ¹²
4A ¹⁵
2 _1Y
3 _1Z
6 _2Y
5 _2Z
10 _3Y
11 _3Z
14 _4Y
13 _4Z
1A
1Y
NC
1Z
1,2EN
2Z
NC
2Y
2A
GND
20-DW PACKAGE
(TOP VIEW)
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
V_CC
4A
4Y
NC
4Z
3,4EN
3Z
NC
3Y
3A
logic diagram (positive logic)
1A ¹
1,2EN ⁵
2A ⁹
3A ¹¹
3,4EN ¹⁵
4A ¹⁹
2 _1Y
4 _1Z
8 _2Y
6 _2Z
12 _3Y
14 _3Z
18 _4Y
16 _4Z
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.
†The _{signaling rate of a line is the number of voltage transitions that are made per second expressed in the units bps (bits per second).}
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  2001 − 20003, Texas Instruments Incorporated
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