DS15BR400_15 Datasheet, PDF (3/19 Pages) Texas Instruments – 4-Channel LVDS Buffer/Repeater with Pre-Emphasis

DS15BR400, DS15BR401
www.ti.com
SNLS224G – AUGUST 2006 – REVISED APRIL 2013
PIN DESCRIPTIONS (continued)
Pin
Name
TQFP Pin
Number
WQFN Pin
Number
DIFFERENTIAL OUTPUTS
OUT0+
48
32
OUT0−
47
31
OUT1+
46
30
OUT1−
45
29
OUT2+
42
28
OUT2−
41
27
OUT3+
40
26
OUT3-
39
25
DIGITAL CONTROL INTERFACE
PWDN
12
8
PEM
2
2
POWER
V_DD
GND
3, 4, 5, 7, 10,
11, 28, 29, 32,
33
8, 9, 17, 18, 23,
24, 37, 38, 43,
44
3, 4, 6, 7, 20,
21
5 ⁽²⁾
N/C
1,6, 25, 26, 27,
1, 17,
30, 31, 34, 35, 18,19,22, 23,
36
24
I/O, Type
O, LVDS
O, LVDS
O, LVDS
O, LVDS
I, LVTTL
I, LVTTL
I, Power
I, Ground
Description
Channel 0 inverting and non-inverting differential outputs. ⁽¹⁾
Channel 1 inverting and non-inverting differential outputs. ⁽¹⁾
Channel 2 inverting and non-inverting differential outputs. ⁽¹⁾
Channel 3 inverting and non-inverting differential outputs. ⁽¹⁾
A logic low at PWDN activates the hardware power down mode (all channels).
Pre-emphasis Control Input (affects all Channels)
V_DD = 3.3V, ±10%
Ground reference for LVDS and CMOS circuitry. For the WQFN package, the
DAP is used as the primary GND connection to the device in addition to the pin
numbers listed. The DAP is the exposed metal contact at the bottom of the
WQFN-32 package. It should be connected to the ground plane with at least 4
vias for optimal AC and thermal performance.
No Connect
(1) The LVDS outputs do not support a multidrop (BLVDS) environment. The LVDS output characteristics of the DS15BR400 and
DS15BR401 are optimized for point-to-point backplane and cable applications.
(2) Note that for the WQFN package the GND is connected thru the DAP on the back side of the WQFN package in addition to the actual
pin numbers listed.
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Copyright © 2006–2013, Texas Instruments Incorporated
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