GS2989 Datasheet, PDF (4/19 Pages) Gennum Corporation – Dual-Slew-Rate, Dual-Output Cable Driver with 3Gb/s Capability

1. Pin Out
1.1 Pin Assignment
VCC
DDI
DDI
VEE
16
15
14
13
1
12
2
GS2989
11
16-pin QFN
(top view)
3
10
4
9
5
6
7
8
Ground Pad
(bottom of package)
SDO1
SDO1
SDO2
SDO2
Figure 1-1: 16-Pin QFN
1.2 Pin Descriptions
Table 1-1: Pin Descriptions
Pin Number
1, 8
Name
VCC
Type
Power
2, 3
4, 13
DDI, DDI
VEE
Input
Power
5
RSET
Input
6*
DISABLE1
Input
Description
Most positive power supply connection for the input buffer and core.
Connect to 3.3V or 2.5V.
Serial data differential input.
Most negative power supply connection for the input buffer and core.
Connect to GND.
External output amplitude control resistor connection.
Control signal input.
When set LOW, the first serial data output is disabled (powered-down) and the
SDO1/SDO1 pins are set to high-impedance. When set HIGH, the SDO1/SDO1 pins will
output a serial data signal.
NOTE: if this pin is left floating, the first serial data output will be enabled.
GS2989 Dual-Slew-Rate, Dual-Output Cable Driver
with 3Gb/s Capability
Data Sheet
52133 - 4
December 2010
4 of 19