SN75LVDS82
FLATLINK RECEIVER
SLLS259D – NOVEMBER 1996 – REVISED MAY 1999
DGG PACKAGE
(TOP VIEW)
4:28 Data Channel Expansion at up to 227.5
Million Bytes per Second (Mbytes/s)
Throughput
D22
D23
V
CC
1
56
55
54
53
52
51
50
49
48
47
46
Suited for SVGA, XGA, or SXGA Display
Data Transmission From Controller to
Display With Very Low EMI
D21
D20
D19
GND
D18
D17
D16
2
D24
3
GND
4
4 Data Channels and Clock Low-Voltage
Differential Channels In and 28 Data and
Clock Low-Voltage TTL Channels Out
D25
5
D26
6
D27
7
Operates From a Single 3.3-V Supply With
250 mW Typ
LVDSGND
A0M
8
V
9
CC
A0P
D15
D14
10
11
5-V Tolerant SHTDN Input
A1M
Falling Clock-Edge-Triggered Outputs
45 D13
44 GND
43 D12
A1P 12
LVDSV 13
LVDSGND 14
Packaged in Thin Shrink Small-Outline
Package With 20-Mil Terminal Pitch
CC
Consumes Less Than 1 mW When Disabled
15
16
17
18
19
20
21
22
23
24
25
26
27
28
42
41
40
39
38
37
36
35
34
33
32
31
30
29
A2M
A2P
D11
D10
Wide Phase-Lock Input Frequency
Range . . . 31 MHz to 68 MHz
CLKINM
CLKINP
A3M
V
CC
No External Components Required for PLL
D9
D8
D7
GND
D6
D5
D4
D3
Inputs Meet or Exceed the Requirements of
the ANSI EIA/TIA-644 Standard
A3P
LVDSGND
PLLGND
Improved Replacement for the National
DS90C582
PLLV
CC
PLLGND
SHTDN
CLKOUT
D0
description
The SN75LVDS82 FlatLink receiver contains
four serial-in 7-bit parallel-out shift registers, a 7×
clock synthesizer, and five low-voltage differential
signaling (LVDS) line receivers in a single
V
CC
D2
D1
GND
integrated circuit. These functions allow receipt of synchronous data from a compatible transmitter, such as the
SN75LVDS81, over five balanced-pair conductors and expansion to 28 bits of single-ended low-voltage TTL
(LVTTL) synchronous data at a lower transfer rate. The SN75LVDS82 can also be used with the SN75LVDS84
or SN75LVDS85 for 21-bit transfers.
When receiving, the high-speed LVDS data is received and loaded into registers at the rate of seven times (7×)
the LVDS input clock (CLKIN). The data is then unloaded to a 28-bit wide LVTTL parallel bus at the CLKIN rate.
A phase-locked loop clock synthesizer circuit generates a 7× clock for internal clocking and an output clock for
the expanded data. The SN75LVDS82 presents valid data on the falling edge of the output clock (CLKOUT).
The SN75LVDS82 requires only five line-termination resistors for the differential inputs and little or no control.
The data bus appears the same at the input to the transmitter and output of the receiver with the data
transmission transparent to the user. The only possible user intervention is the use of the shutdown/clear
(SHTDN) active-low input to inhibit the clock and shut off the LVDS receivers for lower power consumption. A
low-level on SHTDN clears all internal registers to a low level.
The SN75LVDS82 is characterized for operation over ambient air temperatures of 0 C to 70 C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
FlatLink is a registered trademark of Texas Instruments Incorporated.
Copyright 1999, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
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