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參數(shù)資料
| 型號： | MAX308 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Precision.8-Channel/Dual 4-Channel.High-Performance.CMOS Analog Multiplexers |
| 中文描述： | 高精度、8通道/雙4通道、高性能、CMOS模擬多路復(fù)用器 |
| 文件頁數(shù)： | 12/18頁 |
| 文件大?。?/td> | 503K |
| 代理商： | MAX308 |
M
INH
Inhibit is an output that allows for the control of an exter-
nal voltage regulator. On a wake-up request or power-up
on BATT, the transceiver sets the output INH high. This
feature enables the external voltage regulator to be shut
down during sleep mode to reduce power consumption.
INH is floating while entering the sleep mode and stays
floating during the sleep mode. If INH is left floating, it is
not set to a high level again until the following events
occur:
Power-on (V
BATT
switching on at cold start)
Rising or falling edge on
WAKE
Dominant signal longer than 38μs during EN or
STB
at low level
The signals on
STB
and EN are internally set to a low
level when V
CC
is below a certain threshold voltage
providing fail-safe functionality.
After power-on (V
BATT
switched on) the signal on INH
becomes HIGH and an internal power-on flag is set.
This flag can be read in the power-on standby mode
through
ERR
(
STB
= 1, EN = 0) and is reset by entering
the normal operating mode.
ERR
ERR
is a wake-up and power-on indicator, as well as an
error detector. Upon power-up, wake-up, or when a
bus failure is detected, the output signal on
ERR
becomes LOW. Upon error recovery, the output signal
on
ERR
is set HIGH.
STB
STB
is the standby digital control signal into the logic
controller. This is an active-low input that is used with
EN to define the status of the transceiver in normal and
low-power modes.
EN
EN is the enable digital control signal into the logic con-
troller used in conjunction with
STB
to define the status
of the transceiver in normal and low-power modes.
WAKE
WAKE
is an input to the logic controller within the
device to signal a wake-up condition. If
WAKE
receives
a positive or negative pulse for a period longer than
t
WAKE
, wake-up occurs.
±80V Fault-Protected/Tolerant CAN
Transceivers for In-Car Applications
12
______________________________________________________________________________________
F
F
THERMAL
SHUTDOWN
DRIVER
FAULT DETECTION
WAKE-UP
STANDBY
CONTROLLER
4ms
RECEIVER
IPD
GND
MAX305_
INH
WAKE
STB
EN
TXD
ERR
RXD
1
7
5
6
2
4
3
BATT
10
9
11
12
8
V
CC
RTL
CANH
CANL
RTH
Figure 5. Block Diagram
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