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參數(shù)資料
| 型號： | MAX4357ECD |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 運動控制電子 |
| 英文描述： | 32 x 16 Nonblocking Video Crosspoint Switch with I/O Buffers |
| 中文描述： | 32-CHANNEL, CROSS POINT SWITCH, PQFP128 |
| 封裝： | 14 X 20 MM, 1.40 MM HEIGHT, MO-136, TQFP-128 |
| 文件頁數(shù)： | 32/42頁 |
| 文件大?。?/td> | 809K |
| 代理商： | MAX4357ECD |
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M
32 x 16 Nonblocking Video Crosspoint Switch
with I/O Buffers
32
______________________________________________________________________________________
driven externally, the analog output buffers are latched
into a high-impedance state. After
RESET
is released,
the output buffers remain disabled. The outputs may be
enabled by sending a new 112-bit data word or a 16-bit
individual output address word. A reset is initiated from
any of three sources.
RESET
can be driven low by
external circuitry to initiate a reset, or
RESET
can be
pulled low by internal circuitry during power-up (power-
on reset) or thermal shutdown.
Since driving
RESET
low only clears the output-buffer-
enable bit in the matrix control latches,
RESET
can be
used to disable all outputs simultaneously. If no new
data has been loaded into the 112-bit Complete Matrix
Mode register, a single
UPDATE
restores the previous
matrix control settings.
Power-On Reset
The power-on reset ensures all output buffers are in a
disabled state when power is initially applied. A V
DD
voltage comparator generates the power-on reset.
When the voltage at V
DD
is less than 2.5V, the power-on
reset comparator pulls
RESET
low through internal cir-
cuitry. As the digital-supply voltage ramps up crossing
2.5V, the MAX4357 holds
RESET
low for 40ns (typ).
Connecting a small capacitor from
RESET
to DGND
extends the power-on reset delay (see the
RESET
Delay vs.
RESET
Capacitance graph in the
Typical
Operating Characteristics)
.
T hermal S hutdown
The MAX4357 features thermal shutdown protection
with temperature hysteresis. When the die temperature
exceeds +150
°
C, the MAX4357 pulls
RESET
low, dis-
abling the output buffer. When the die cools by 20
°
C,
the
RESET
pulldown is deasserted, and output buffers
remain disabled until the device is programmed again.
Applic ations Information
Building Large V ideo-S witc hing S ystems
The MAX4357 can be easily used to create larger
switching matrices. The number of ICs required to
implement the matrix is a function of the number of
input channels, the number of outputs required, and
whether the array needs to be nonblocking or not.
The most straightforward technique for implementing
nonblocking matrices is to arrange the building blocks
in a grid. The inputs connect to each vertical bank of
devices in parallel with the other banks. The outputs of
each building block in a vertical column connect
together in a wired-OR configuration. Figure 6 shows a
128-input, 32-output, nonblocking array using eight
MAX4357 crosspoint devices.
Table 2. 16-Bit Serial Control Word Bit Assignments (Mode 0: Individual Output
Address Mode)
BIT
NAME
FUNCTION
15 (MSB)
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0 (LSB)
X
Don
’
t care
MSB of selected chip address
MSB of selected chip address
MSB of selected chip address
LSB of selected chip address
MSB of output buffer address
MSB of output buffer address
MSB of output buffer address
LSB of output buffer address
Enable bit for output, 0 = disable, 1 = enable
Gain select for output buffer, 0 = gain of +1V/V, 1 = gain of +2V/V
MSB of input channel select address
MSB of input channel select address
MSB of input channel select address
MSB of input channel select address
LSB of input channel select address
IC Address A3
IC Address A2
IC Address A1
IC Address A0
Output Address B3
Output Address B2
Output Address B1
Output Address B0
Output Enable
Gain Set
Input Address 4
Input Address 3
Input Address 2
Input Address 1
Input Address 0
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| MAX4357ECD+ | 功能描述:模擬和數(shù)字交叉點 IC 32x16 Nonblocking Video Crx Switch RoHS:否 制造商:Micrel 配置:2 x 2 封裝 / 箱體:MLF-16 數(shù)據(jù)速率:10.7 Gbps 輸入電平:CML, LVDS, LVPECL 輸出電平:CML 電源電壓-最大:3.6 V 電源電壓-最小:2.375 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 產(chǎn)品:Digital Crosspoint 封裝:Tube |
| MAX4357ECD+D | 功能描述:模擬和數(shù)字交叉點 IC 32x16 Nonblocking Video Crx Switch RoHS:否 制造商:Micrel 配置:2 x 2 封裝 / 箱體:MLF-16 數(shù)據(jù)速率:10.7 Gbps 輸入電平:CML, LVDS, LVPECL 輸出電平:CML 電源電壓-最大:3.6 V 電源電壓-最小:2.375 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 產(chǎn)品:Digital Crosspoint 封裝:Tube |
| MAX4357ECD+T | 功能描述:模擬和數(shù)字交叉點 IC 32x16 Nonblocking Video Crx Switch RoHS:否 制造商:Micrel 配置:2 x 2 封裝 / 箱體:MLF-16 數(shù)據(jù)速率:10.7 Gbps 輸入電平:CML, LVDS, LVPECL 輸出電平:CML 電源電壓-最大:3.6 V 電源電壓-最小:2.375 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 產(chǎn)品:Digital Crosspoint 封裝:Tube |
| MAX4357ECD+TD | 功能描述:模擬和數(shù)字交叉點 IC 32x16 Nonblocking Video Crx Switch RoHS:否 制造商:Micrel 配置:2 x 2 封裝 / 箱體:MLF-16 數(shù)據(jù)速率:10.7 Gbps 輸入電平:CML, LVDS, LVPECL 輸出電平:CML 電源電壓-最大:3.6 V 電源電壓-最小:2.375 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 產(chǎn)品:Digital Crosspoint 封裝:Tube |
| MAX4357ECD-D | 功能描述:模擬和數(shù)字交叉點 IC RoHS:否 制造商:Micrel 配置:2 x 2 封裝 / 箱體:MLF-16 數(shù)據(jù)速率:10.7 Gbps 輸入電平:CML, LVDS, LVPECL 輸出電平:CML 電源電壓-最大:3.6 V 電源電壓-最小:2.375 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 產(chǎn)品:Digital Crosspoint 封裝:Tube |
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