1FEATURES
· Designed to Operate at up to 20 Million Data
Transfers per Second on Each RS-422/RS-485
Channel
· SN65HVD09 Packaged in Thin Shrink
Small-Outline Package with 0.5-mm Pin Pitch
· ESD Protection on Bus Pins Exceeds 12kV
· Low Disabled Supply Current 8 mA Typ
· Thermal Shutdown Protection
· Positive- and Negative-Current Limiting
· Power-Up/Down Glitch Protection

DESCRIPTION
The SN65HVD09 is a 9-channel RS-422 / RS-485
transceiver suitable for industrial applications. It offers
improved switching performance, a small package,
and high ESD protection. The precise skew limits
ensures that the propagation delay times, not only
from channel-to-channel but from device-to-device,
are closely matched for the tight skew budgets
associated with high-speed parallel data buses.
Patented thermal enhancements are used in the thin
shrink, small-outline package (TSSOP), allowing
operation over the industrial temperature range. The
TSSOP package offers very small board area
requirements while reducing the package height to
1 mm. This provides more board area and allows
component mounting to both sides of the printed
circuit boards for low-profile, space-restricted
applications such as small form-factor hard disk
drives.
The HVD09 can withstand electrostatic discharges
exceeding 12 kV using the human-body model, and
600 V using the machine model on the RS-485 I/O
terminals. This provides protection from the noise that
can be coupled into external cables. The other
terminals of the device can withstand discharges
exceeding 4 kV and 400 V respectively.
Each of the nine half-duplex channels of the HVD09
is designed to operate with either RS-422 or RS-485
communication networks.
The SN65HVD09 is characterized for operation over
an ambient air temperature range of –40°C to 85°C.