參數(shù)資料
型號： MAX3225EEAP
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 通用總線功能
英文描述： 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors
中文描述： DUAL LINE TRANSCEIVER, PDSO20
封裝： 5.30 MM, MO-150, SSOP-20
文件頁數(shù)： 9/20頁
文件大小： 243K
代理商： MAX3225EEAP
outputs that are high impedance when shut down
(
FORCEOFF
= GND) (Table 1).
The MAX3244E/MAX3245E feature an extra, always
active, noninverting output, R2OUTB. R2OUTB output
monitors receiver activity while the other receivers are
high impedance, allowing Ring Indicator applications to
be monitored without forward biasing other devices
connected to the receiver outputs. This is ideal for sys-
tems where V
CC
is set to ground in shutdown to
accommodate peripherals such as UARTs (Figure 2).
The MAX3224E–MAX3227E/MAX3244E/MAX3245E fea-
ture an
INVALID
output that is enabled low when no
valid RS-232 voltage levels have been detected on all
receiver inputs. Because
INVALID
indicates the receiv-
er input’s condition, it is independent of FORCEON and
FORCEOFF
states (Figures 3 and 4).
AutoS hutdown Plus Mode
The MAX3224E–MAX3227E/MAX3244E/MAX3245E
achieve a1μAsupplycurrentwith Maxim’s AutoShutdown
Plus feature, which operates when
FORCEOFF
is high
and a FORCEON is low. When these devices do not
sense a valid signal transition on any receiver and trans-
mitter input for 30sec, the on-board charge pumps are
shut down, reducing supply current to 1μA. This occurs
if the RS-232 cable is disconnected or if the connected
peripheral transmitters are turned off, and the UART dri-
ving the transmitter inputs is inactive. The system turns
on again when a valid transition is applied to any
RS-232 receiver or transmitter input. As a result, the sys-
M
±15kV ESD-Protected, 1μA, 1Mbps, 3.0V to 5.5V,
RS -232 Transc eivers with AutoS hutdown Plus
_______________________________________________________________________________________
9
Table 1. Output Control Truth Table
OPERATION
STATUS
FORCEON
FORCEOFF
VALID
RECEIVER
LEVEL
RECEIVER OR
TRANSMITTER
EDGE WITHIN
30sec
T_OUT
R_OUT
(MAX3224E/
MAX3225E/
MAX3226E/
MAX3227E)
R_OUT
(MAX3244E/
MAX3245E)
R2OUTB
(MAX3244E/
MAX3245E)
Shutdown
(Forced Off)
X
0
X
X
High-Z
Active
High-Z
Active
Normal
Operation
(Forced On)
1
1
X
X
Active
Active
Active
Active
Normal
Operation
(AutoShutdown
Plus)
0
1
X
Yes
Active
Active
Active
Active
Shutdown (Auto-
Shutdown Plus)
0
1
X
No
High-Z
Active
Active
Active
Normal
Operation
INVALID
*
1
Yes
X
Active
Active
Active
Active
Normal
Operation
INVALID
*
1
X
Yes
Active
Active
Active
Active
Shutdown
INVALID
*
1
No
No
High-Z
Active
Active
Active
Normal
Operation
(AutoShutdown)
INVALID
*
INVALID
**
Yes
X
Active
Active
Active
Active
Shutdown
(AutoShutdown)
INVALID
*
INVALID
**
No
X
High-Z
Active
High-Z
Active
X = Don’t care
*
INVALID
connected to FORCEON
**
INVALID
connected to FORCEON and
FORCEOFF
相關PDF資料
PDF描述
MAX3224EPP 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors
MAX3224 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors
MAX3224EAP 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors
MAX3226CAE LINE TRANSCEIVER|CMOS|1 DRIVER|1 RCVR|SSOP|16PIN|PLASTIC
MAX3227CAE LINE TRANSCEIVER|CMOS|1 DRIVER|1 RCVR|SSOP|16PIN|PLASTIC
相關代理商/技術參數(shù)
參數(shù)描述
MAX3225EEAP+ 功能描述:RS-232接口集成電路 3-5.5V 1Mbps Transceiver RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
MAX3225EEAP+T 功能描述:RS-232接口集成電路 3-5.5V 1Mbps Transceiver RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
MAX3225EEAP-T 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
MAX3225EEPP 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
MAX3225EEPP+ 功能描述:RS-232接口集成電路 3-5.5V 1Mbps Transceiver RoHS:否 制造商:Exar 數(shù)據(jù)速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
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