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參數(shù)資料
| 型號： | MAX3812USA+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DRIVER CABLE SD/HD 8-SOIC |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 驅(qū)動器 |
| 驅(qū)動器/接收器數(shù)： | 1/0 |
| 規(guī)程： | LVDS |
| 電源電壓： | 3 V ~ 3.6 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOIC |
| 包裝： | 帶卷 (TR) |
Detailed Description
The MAX3812 is a multirate SMPTE cable driver
designed to drive 75
coaxial cable for serial digital
interfaces. The driver consists of a differential input
buffer, slew-rate selection switch, output-voltage-swing
control, and a differential output buffer (Figure 2).
Differential Data Inputs
The MAX3812 data inputs (IN+, IN-) are high impedance
and should be terminated as shown in the Typical
Application Circuit. When properly terminated, the inputs
are compatible with differential swings of CML, LVPECL,
and LVDS. For more information about logic interfacing,
refer to Maxim application note HFAN-01.0: Introduction
to LVDS, PECL, and CML.
While DC-coupled, the MAX3812 operates properly as
long as the specified common-mode voltage and differ-
ential voltage swings are met. Because of the on-chip
biasing network (Figure 3), the inputs self-bias to the
proper operating point to accommodate AC-coupling. If
the inputs are AC-coupled, a minimum capacitor value
of 4.7F should be used to accommodate SMPTE
pathological test signals.
MAX3812
Multirate SMPTE SD/HD Cable Driver
with Selectable Slew Rate
_______________________________________________________________________________________
5
Pin Description
PIN
NAME
FUNCTION
1
IN+
Positive Data Input
2
IN-
Negative Data Input
3
GND
Supply Ground
4
RSET
Output-Voltage-Swing Control. Connect a resistor between RSET and VCC to set the output
voltage swing.
5VCC
+3.3V Supply Voltage
6
SD/HD
Output Slew-Rate Control, LVTTL. Set HIGH for SMPTE 259M/344M rise/fall specifications. Set LOW
for SMPTE 292M rise/fall specifications.
7
OUT-
Negative Data Output
8
OUT+
Positive Data Output
MAX3812
BANDGAP REFERENCE
AND BIASING CIRCUIT
RSET
SD/HD
IN+
IN-
OUT+
OUT-
Figure 2. Functional Diagram
MAX3812
VCC
IN-
IN+
5k
10k
10k
10k
ESD
STRUCTURES
ESD
STRUCTURES
Figure 3. Differential Input Circuit
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