ST485ERBN STMicroelectronics, ST485ERBN Datasheet

IC TXRX LOPWR RS485/422 8-DIP

ST485ERBN

Manufacturer Part Number
ST485ERBN
Description
IC TXRX LOPWR RS485/422 8-DIP
Manufacturer
STMicroelectronics
Type
Transceiverr
Datasheets

Specifications of ST485ERBN

Number Of Drivers/receivers
1/1
Protocol
RS422, RS485
Voltage - Supply
4.75 V ~ 5.25 V
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Device Type
Transceiver
Interface Type
RS422, RS485
No. Of Drivers
1
Supply Voltage Range
4.75V To 5.25V
Driver Case Style
DIP
No. Of Pins
8
Operating Temperature Range
-40°C To +85°C
Svhc
No
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-2086-5

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ST485ERBN
Manufacturer:
ST
0
Part Number:
ST485ERBN SP485ACN ST485CN ST485BN ST485ECN ST485E
Manufacturer:
ST
0
Part Number:
ST485ERBN/ST485ERBDR
Manufacturer:
ST
0
Features
Description
The ST485ERB is al low power transceiver for
RS-485 and RS-422 communication. Each driver
output and receiver input is protected against ±15
kV electrostatic discharge (HBM) ± 8 kV (IEC-
1000-4-2 contact discharge) shocks, without
latch-up. These parts contain one driver and one
receiver.
This transceiver draws 300 µA (typ.) of supply
current when unloaded or fully loaded with
disabled drivers.
It operates from a single 5 V supply.
Driver is short-circuit current limited and is
protected against excessive power dissipation by
thermal shutdown circuitry that places the driver
outputs into a high-impedance state.
Table 1.
February 2009
ST485ERBDR
ST485ERBN
Low quiescent current: 300 µA
Designed for RS-485 interface application
- 7 V to 12 V common mode input voltage range
Driver maintains high impedance in 3-state or
with the power OFF
70 mV typical input hysteresis
30 ns propagation delay, 5 ns skew
Operate from a single 5 V supply
Current limiting and thermal shutdown for
driver overload protection
ESD protection:
– ± 15 kV (HBM)
– ± 8 kV (IEC-1000-4-2 contact discharge)
Allows up to 256 transceivers on the bus
Order code
Device summary
Temperature range
- 40 to 85 °C
- 40 to 85 °C
SO-8 (tape and reel)
Rev 7
Package
DIP-8
±15 kV ESD protected, low power
The ST485ERB is designed for bi-directional data
communications on multipoint bus transmission
line (half-duplex applications).
RS-485/RS-422 transceiver
DIP-8
50 parts per tube / 40 tube per box
2500 parts per reel
ST485ERB
Packaging
SO-8
www.st.com
1/19
19

Related parts for ST485ERBN

ST485ERBN Summary of contents

Page 1

... Driver is short-circuit current limited and is protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. Table 1. Device summary Order code Temperature range ST485ERBN - °C ST485ERBDR - °C February 2009 ±15 kV ESD protected, low power RS-485/RS-422 transceiver DIP-8 ...

Page 2

Contents 1 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

Pin settings Figure 1. Pin configuration Table 2. Pin description Pin n° Symbol RO Receiver output RE Receiver output enable DE Driver output enable DI Driver input GND Ground A Non-inverting ...

Page 4

Truth tables Table 3. Truth table (driver Note Don’t care High impedance Table 4. Truth table (receiver Note Don’t care High impedance ...

Page 5

Maximum ratings Table 5. Absolute maximum ratings Symbol V Supply voltage CC V Control input voltage (RE, DE Driver input voltage (DI Driver output voltage ( Receiver input voltage ( ...

Page 6

Electrical characteristics Table 6. ESD performance: transmitter outputs, receiver inputs Symbol ESD ESD protection voltage ESD ESD protection voltage ± °C A Table 7. DC electrical characteristics ...

Page 7

Table 7. DC electrical characteristics (continued) Symbol Parameter ( load supply current CC Driver short-circuit current, I OSD1 V =High O Driver short-circuit current, I OSD2 V =Low O Receiver short-circuit I OSR current 1. All currents into ...

Page 8

V ± °C) A Table 9. Receiver switching characteristics Symbol Parameter t Propagation delay input PLH t to output PHL Differential receiver t SKD skew t Output enable time ...

Page 9

Test circuit and typical characteristics Figure 2. Driver DC test load Figure 4. Drive/receiver timing test circuit Figure 3. Receiver timing test load Figure 5. Driver timing test load 9/19 ...

Page 10

Figure 6. Driver propagation delay Figure 7. Driver enable and disable time 10/19 ...

Page 11

Figure 8. Receiver propagation delay Figure 9. Receiver enable and disable time 11/19 ...

Page 12

Figure 10. Receiver output current vs. output low voltage Figure 12. Driver output current vs. output low voltage Figure 14. Supply current vs. temperature 12/19 Figure 11. Receiver output current vs. output high voltage Figure 13. Driver output current vs. ...

Page 13

Figure 16. Receiver low level output voltage vs. temperature Figure 17. Differential driver output voltage vs. temperature 13/19 ...

Page 14

Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at ...

Page 15

Plastic DIP-8 mechanical data mm. Dim. Min. Typ. A 3.3 a1 0.7 B 1.39 B1 0.91 b 0 8.8 e 2.54 e3 7. 3.3 Z 0.44 inch. Max. Min. Typ. 0.130 ...

Page 16

Dim. Min. A 1.35 A1 0.10 A2 1.10 B 0.33 C 0.19 D 4. 5.80 h 0.25 L 0.40 k ddd 16/19 SO-8 mechanical data mm. Typ. Max. 1.75 0.25 1.65 0.51 0.25 5.00 4.00 1.27 ...

Page 17

Tape & reel SO-8 mechanical data mm. Dim. Min. Typ 12 8.1 Bo 5.5 Ko 2.1 Po 3.9 P 7.9 inch. Max. Min. Typ. 330 13.2 0.504 0.795 2.362 22.4 8.5 0.319 ...

Page 18

Revision history Table 10. Document revision history Date Revision 21-Mar-2006 3 01-Aug-2006 4 25-Oct-2006 5 02-Dec-2008 6 16-Feb-2008 7 18/19 Changes Order codes has been updated and new template. Mistake in cover page description 300 mA ==> 300 µA. ...

Page 19

... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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