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.