參數(shù)資料
型號(hào)： MAX3318EEUP+T
廠商： Maxim Integrated Products
文件頁數(shù)： 14/15頁
文件大小： 0K
描述： IC TXRX RS232 460KBPS 20-TSSOP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
類型： 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù)： 2/2
規(guī)程： RS232
電源電壓： 2.25 V ~ 3 V
安裝類型： 表面貼裝
封裝/外殼： 20-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 20-TSSOP
包裝： 帶卷 (TR)
MAX3316–MAX3319
2.5V, 1A, 460kbps,
RS-232-Compatible Transceivers
8
_______________________________________________________________________________________
MAX3317 Shutdown Mode
Supply current falls to less than 1A in shutdown mode
(SHDN = low). When shut down, the device’s charge
pumps are turned off, V+ is pulled down to VCC, V- is
pulled to ground, and the transmitter outputs are disabled
(high impedance). The time required to exit shutdown is
typically 30s, as shown in Figure 2. Connect SHDN to
VCC if the shutdown mode is not used; SHDN has no
effect on R_OUT.
MAX3318/MAX3319
AutoShutdown Plus Mode
Maxim’s AutoShutdown Plus feature on the MAX3318/
MAX3319 allows the supply current to fall to 1A. These
devices will enter the AutoShutdown Plus mode if
FORCEOFF is high, FORCEON is low, and they do not
sense a valid signal transition on any receiver or trans-
mitter input for 30 seconds. This may occur if the RS-232
cable is disconnected or if the peripheral transmitters
are turned off, and the UART driving 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 system saves power
without changes to the existing BIOS or operating system.
Figure 4a depicts valid and invalid RS-232 receiver volt-
age levels. INVALID indicates the receiver input’s condi-
tion and is independent of FORCEON and FORCEOFF
states. Figure 3 and Table 1 summarize the operating
modes of the MAX3318/MAX3319. FORCEON and
FORCEOFF override AutoShutdown Plus circuitry. When
neither control is asserted, the IC selects between these
states automatically, based on the last receiver or trans-
mitter edge received.
X
VALID RECEIVER
LEVEL
Active
R_OUT
No
Yes
X
RECEIVER OR
TRANSMITTER
EDGE WITHIN
30s
High-Z
Active
High-Z
T_OUT
Shutdown
(AutoShutdown Plus)
0
1
Normal Operation
(AutoShutdown Plus)
0
1
Normal Operation
(Forced On)
1
Shutdown (Forced
Off)
X
0
OPERATION
STATUS
FORCEON
FORCEOFF
No
Yes
No
X
Yes
Active
X
No
Yes
X
High-Z
Active
High-Z
Active
Shutdown
(AutoShutdown)
INVALID**
Normal Operation
(AutoShutdown)
INVALID**
Shutdown
INVALID*
1
Normal Operation
INVALID*
1
Normal Operation
INVALID*
1
Table 1. Output Control Truth Table (MAX3318/MAX3319)
Table 2. Shutdown and Enable Control
Truth Table (MAX3317)
X = Don’t care
*INVALID connected to FORCEON
**INVALID connected to FORCEON and FORCEOFF
SHDN
EN
T_OUT
R_OUT
0
High-Z
Active
0
1
High-Z
1
0
Active
1
Active
High-Z
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參數(shù)描述
MAX3318EIDB 功能描述:RS-232接口集成電路 2.5-V 460-KBPS RS-232 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(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
MAX3318EIDBG4 功能描述:RS-232接口集成電路 2.5-V 460-KBPS RS-232 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(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
MAX3318EIDBR 功能描述:RS-232接口集成電路 2.5-V 460-KBPS RS-232 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(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
MAX3318EIDBRG4 功能描述:RS-232接口集成電路 2.5-V 460-KBPS RS-232 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(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
MAX3318EIPW 功能描述:RS-232接口集成電路 2.5-V 460-KBPS RS-232 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(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝:
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