SP3070-3078E_08 Datasheet, PDF (1/19 Pages) Sipex Corporation – ±15kV ESD-Protected, 3.3V, 1/8 Load, Failsafe

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SP3070E - SP3078E Family
±15kV ESD-Protected, 3.3V, 1/8 Load, Failsafe
RS-485/RS422 Transceivers
FEATURES
■ ±15kV ESD protection for RS485 pins
■ 3.3V low-power operation
■ Advanced receiver-failsafe protection for
open, shorted or terminated lines
■ Up to 256 Transceivers may share bus
RO 1
RE 2
DE 3
DI 4
8 PIN NSOIC
SP3072E
SP3075E
SP3078E
Half Duplex
8 V_CC
7B
6A
5 GND
■ Very low load for 8x greater fanout
■ Hot Swap glitch protection RE and DE
■ Thermal shutdown protects against driver
contention
■ Available in three industry standard foot-
prints
V_CC 1
R_O 2
DI_I 3
GND 4
8 PIN NSOIC
SP3071E
SP3074E
SP3077E
Full Duplex
8A
7B
6Z
5Y
■ SP3070E, SP3073E and SP3076E in Full-Duplex (14 pin)
■ SP3071E, SP3074E and SP3077E in Full-Duplex (8 pin)
■ SP3072E, SP3075E and SP3078E in Half-Duplex (8 pin)
■ Three applications-optimized speed grades
■ SP3070-72E: 250kbps fully slew-limited
■ SP3073-75E: 500kbps slew-limited
■ SP3076-78E: 16Mbps high speed
■ Small form factor SO-narrow packages
NC 1
RO 2
RE 3
DE 4
DI 5
GND 6
GND 7
14 Pin NSOIC
SP3070E
SP3073E
SP3076E
Full Duplex
14 VCC
13 NC
12 A
11 B
10 Z
9Y
8 NC
■ Industrial (-40 to +85ºC) and Extended
(-40 to +125ºC) temperature grades
Now Available in Lead Free Packaging
APPLICATIONS
■ Industrial Control, Utility Meters Building Automation, Instrumentation, Point of Sale
DESCRIPTION
The SP3070-3078E differential line transceivers are suitable for bidirectional communication
on balanced multipoint bus transmission lines and comply with both RS485 and RS422 EIA
Standards. Each device consists of a differential driver and differential receiver. All devices
operate from a 3.3V power supply.
High receiver input impedance allows a large number of transceivers to share a common data
bus while maintaining signal margin and without excessive loading or use of expensive
repeaters. The high impedance driver output is maintained over the entire common-mode
voltage range from -7 to +12V. Receivers will failsafe to logic 1 output when inputs are open,
shorted or terminated. Drivers include built-in short-circuit protection and a thermal-overload
shutdown to protect against excessive power dissipation from bus contention or cable faults.
All RS485 inputs are ESD protected up to ±15kV (Air-Gap and Human Body Model) and up
to ±8kV Contact discharge (IEC 1000-4-2).
Date: 03/31/05
SP3070E - SP3078E Family, ± 15kV ESD-Protected, Failsafe RS-485/RS422 Transceivers
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© Copyright 2005 Sipex Corporation