ZT3070E Low Power 3V 250kbps/500kbps/16Mbps RS485 Transceivers
Zywyn Corporation
Low Power 3V 250kbps/500kbps/16Mbps RS485E Transceivers
Features
• Meets or exceeds the requirements of ANSI Stan-
dard TIA/EIA-485-A and ISO 8482:1987(E) specifi-
cations for V
CC
at +3.3V ±10%
• Low quiescent current – 0.5mA typ., 1.5mA max.
• Low shutdown current (where applicable) - 0.05μA
typical, 10μA max.
• Guaranteed standard data rate 250kbps, 500kbps,
or 16Mbps
• True Fail-Safe (Open and Short) Receiver
• -7V to +12V common-mode input voltage range
• Half-Duplex or Full-Duplex configuration
• Allows up to 1/8 unit load (256 devices) on the
same common bus
• Controlled driver output slew rate and receiver
input
fi
ltering
• Active-high driver enable and active-low receiver
enable
• ESD Protection on bus terminals
±15kV Human Body Model (HBM)
• Drop-in Replacements for MAX3070E, MAX3071E,
MAX3072E, MAX3073E, MAX3074E, MAX3075E,
MAX3076E, MAX3077E, MAX3078E
Zywyn
ZT3070E, ZT3071E, ZT3072E, ZT3073E,
ZT3074E, ZT3075E, ZT3076E, ZT3077E,
ZT3078E
ZT3070E-ZT3078E
General Description
The ZT3070E series devices are 3V differential data
line transceivers for RS485/RS422 communication that
consist of one driver and one receiver with high level
of ESD protection. They are designed for balanced
transmission lines interface that meet ANSI standard
TIA/EIA-485-A and ISO 8482:1987(E) specifications.
The ZT3070E series devices span out with half or full
duplex, data rate guaranteed at 250kbps, 500kbps or
16Mbps, and allow 1/8 unit load that fan out 256 devices
sharing a common bus. The I/Os are enhanced-elec-
trostatic discharge (ESD) protected, exceeding ±15kV
Human Body Model (HBM).
Applications
•
•
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•
•
•
•
•
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RS-422/RS-485 communications
Utility meters
Industrial process control
Building automation
Level translators
Transceivers for EMI-sensitive applications
Routers and HUBs
Industrial-controlled Local Area Networks
Industrial PCs, embedded PCs and peripherals
Product Selection Guide And Cross Reference
Part
Number
ZT3070E
ZT3071E
ZT3072E
ZT3073E
ZT3074E
ZT3075E
ZT3076E
ZT3077E
ZT3078E
# of
Slew
Data Rate
Duplex
Tx/Rx on Rate
(Mbps)
Bus
Limit
Full
0.25
256
yes
Full
0.25
256
yes
Half
0.25
256
yes
Full
0.5
256
yes
Full
0.5
256
yes
Half
0.5
256
yes
Full
16
256
no
Full
16
256
no
Half
16
256
no
Low-
Pin - to -
Tx/Rx Number
Power
Pin Cross
Enable of Pins
Shutdown
Reference
yes
yes
14
MAX3070E
no
no
8
MAX3071E
yes
yes
8
MAX3072E
yes
yes
14
MAX3073E
no
no
8
MAX3074E
yes
yes
8
MAX3075E
yes
yes
14
MAX3076E
no
no
8
MAX3077E
yes
yes
8
MAX3078E
Specifications subject to change without notice
Zywyn Corporation • Tel (408) 733-3225 • Fax (408) 733-3206
1
Email sales@zywyn.com • www.zywyn.com
•
Zywyn
July 2010
rev. 1.1
ASIX [ ASIX ELECTRONICS CORPORATION ]
