MAX3060E Datasheet, PDF (1/17 Pages) Maxim Integrated Products – 15kV ESD-Protected, Fail-Safe, 20Mbps, Slew-Rate-Limited RS-485/RS-422 Transceivers in a SOT

19-2536; Rev 0; 7/02
±15kV ESD-Protected, Fail-Safe, 20Mbps, Slew-Rate-
Limited RS-485/RS-422 Transceivers in a SOT
General Description
The MAX3060E/MAX3061E/MAX3062E high-speed
transceivers for RS-485/RS-422 communication contain
one driver and one receiver. These devices feature fail-
safe circuitry, which guarantees a logic-high receiver
output when the receiver inputs are open or shorted.
This means that the receiver output is a logic high if all
transmitters on a terminated bus are disabled (high
impedance). These devices also feature hot-swap cir-
cuitry that eliminates data glitches during hot insertion.
The MAX3060E features slew-rate-limited drivers that
minimize EMI and reduce reflections caused by
improperly terminated cables, allowing error-free data
transmission up to 115kbps. The MAX3061E, also slew-
rate limited, transmits up to 500kbps. The MAX3062E
driver is not slew-rate limited, allowing transmit speeds
up to 20Mbps. All transmitter outputs are protected to
±15kV using the Human Body Model.
These transceivers typically draw 910µA of supply
current when unloaded, or 790µA when fully loaded
with the drivers disabled.
All devices have a 1/8-unit-load receiver input imped-
ance that allows up to 256 transceivers on the bus. These
devices are intended for half-duplex communication.
Applications
RS-422/RS-485 Communications
Level Translators
Transceivers for EMI-Sensitive Applications
Industrial-Control Local-Area Networks
Features
o True Fail-Safe Receiver While Maintaining
EIA/TIA-485 Compatibility
o Enhanced Slew-Rate Limiting Facilitates
Error-Free Data Transmission (MAX3060E and
MAX3061E)
o 1nA Low-Current Shutdown Mode
o Hot-Swappable for Telecom Applications
o ESD Protection: ±15kV Human Body Model
o Allow Up to 256 Transceivers on the Bus
o Space-Saving 8-Pin SOT23 Package
Ordering Information
PART
MAX3060EEKA-T
MAX3061EEKA-T
MAX3062EEKA-T
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
8 SOT23-8
8 SOT23-8
8 SOT23-8
TOP
MARK
AAKI
AAKJ
AAKK
PART
MAX3060E
MAX3061E
MAX3062E
DATA
RATE
(Mbps)
0.115
0.5
20
Selector Guide
SLEW-
RATE
LIMITED
Yes
Yes
No
TRANSCEIVERS
ON BUS
256
256
256
TOP VIEW
RO 1
R
RE 2
DE ³
DI ⁴ D
Typical Operating Circuit/Pin Configuration
+5V
0.1µF _MAX3060E
MAX3061E
DE
8 V_CC
MAX3062E
DI
D
7B
B
Rt
Rt
6
A
5 _GND
A
R
RO
RE
________________________________________________________________ Maxim Integrated Products 1
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