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參數(shù)資料
| 型號： | MAX1485CUB |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited, 12Mbps, RS-485/RS-422 Transceivers in レMAX Package |
| 中文描述： | LINE TRANSCEIVER, PDSO10 |
| 封裝： | MICRO MAX-10 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大小： | 184K |
| 代理商： | MAX1485CUB |
M
Software-Selectable, Half-/Full-Duplex, Slew-Rate-Limited,
12Mbps, RS-485/RS-422 Transceivers in μMAX Package
12
______________________________________________________________________________________
Low-Power S hutdown Mode
(MAX 1481 only)
Low-power shutdown mode is initiated by bringing both
RE
high and DE low. In shutdown, the MAX1481 typi-
cally draws only 0.1μA of supply current.
RE
and DE may be driven simultaneously; the parts are
guaranteed not to enter shutdown if
RE
is high and DE
is low for less than 50ns. If the inputs are in this state
for at least 600ns, the parts are guaranteed to enter
shutdown.
Enable times t_
ZH
and t_
Z
L
in the Switching Character-
istics tables assume the part was not in low-power shut-
down. Enable times t_
ZH
(SHDN)
and t_
ZL
(SHDN)
assume
the parts were shut down. It takes drivers and receivers
longer to become enabled from the low-power shutdown
mode (t_
ZH
(SHDN)
, t_
Z
L(SHDN)
) than from the
driver/receiver disable mode (t_
ZH
, t_
Z
L
).
Driver Output Protec tion
Excessive output current and power dissipation caused
by faults or by bus contention are prevented by two
mechanisms. A foldback current limit on the output
stage provides immediate protection against short cir-
cuits over the whole common-mode voltage range (see
Typical Operating Characteristics). In addition, a ther-
mal shutdown circuit forces the driver outputs into a
high-impedance state if the die temperature becomes
excessive.
V
OH
V
OL
A
B
1V
-1V
1.5V
1.5V
OUTPUT
INPUT
RO
R
PLH
R
PHL
Figure 11. Receiver Propagation Delays
OUTPUT NORMALLY LOW
OUTPUT NORMALLY HIGH
3V
0V
V
CC
RO
RO
0V
1.5V
1.5V
V
OL
+ 0.5V
V
OH
- 0.5V
1.5V
1.5V
R
ZL(SHDN)
, R
ZL
R
LZ
R
ZH(SHDN)
, R
ZH
R
HZ
RE
Figure 12. Receiver Enable and Disable Times
(MAX1481/MAX1484 only)
R
B
RECEIVER
OUTPUT
ATE
A
V
ID
R
Figure 13. Receiver Propagation Delay Test Circuit
20dB/div
250kHz/div
2.5MHz
0Hz
M
Figure 14. Driver Output Waveform and FFT Plot of
MAX1484/MAX1486 Transmitting a 20kHz signal
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1485CUB+ | 功能描述:RS-422/RS-485 接口 IC 12Mbps RS485/RS422 Transceiver RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
| MAX1485CUB+T | 功能描述:RS-422/RS-485 接口 IC 12Mbps RS485/RS422 Transceiver RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
| MAX1485CUB-T | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
| MAX1485EUB | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
| MAX1485EUB/GG8 | 功能描述:RS-422/RS-485 接口 IC RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)速率:1136 Kbps 工作電源電壓:3 V to 5.5 V 電源電流:5.9 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
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