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参数资料
| 型号： | SP211EHEA-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 13/16页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS232 MULTI-CH 28SSOP |
| 标准包装： | 1,500 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 4/5 |
| 规程： | RS232 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 带卷 (TR) |
Exar Corporation 48720 Kato Road, Fremont CA, 94538 50-668-707 www.exar.com
SP2EH_23EH_0_060
6
SHuTDOwN MODE
The
SP211EH and SP213EH both feature
a control input which will disable the device
and reduce power supply to less than 0A,
making the parts ideal for battery-powered
systems. In the "shutdown" mode the
receivers and transmitters will both be tri-
stated. The V+ output of the charge pump
will discharge to Vcc and the V- output will
discharge to ground.
For complete shutdown to occur and the
0A power drain to be realized, the follow-
ingconditionsmustbemet:
SP211EH:
+5V must be applied to the SD pin.
ENABLE must be either 0V, +5V or not
connected
the transmitter inputs must be either
+5.0V or not connected
Vcc must be +5V
Receiver inputs must be >0V and <+5V
SP213EH:
0V must be applied top the SD pin
ENABLE must be either 0V, +5.0V or
not connected
the transmitter inputs must be either
+5.0V or not connected
Vcc must be +5V
Receiver inputs must be >0V and <+5V
ENAblE
SP211EH and SP213EH feature an enable
input, which allows the receiver outputs to
be either tri–stated or enabled. This can be
especially useful when the receiver is tied
directly to a shared microprocessor data
bus. For the
SP211EH, enable is active
low; that is, 0V applied to the ENABLE pin
will enable the receiver outputs. For the
SP213EH, enable is active high; that is, +5V
applied to the ENABLE pin will enable the
receiver outputs.
wAKE-uP FuNCTION
The
SP213EH has a wake-up feature that
keeps two receivers (R4 and R5) in an en-
abled state when the device is in shutdown
mode.Withonlythereceiversactiveduring
shutdown, the devices draw 5-0A of sup-
ply current.
Atypical application of this function would be
where a modem is interfaced to a computer
in a power-down mode. The ring indicator
signal from the modem could be passed
through an active receiver in the
SP213EH
that is itself in the shutdown mode. The ring
indicator signal would propagate through
the
SP213EH to the power management
circuitry of the computer to power up the
microprocessor and the
SP213EH drivers.
After the supply voltage to the
SP213EH
reaches +5.0V, the SHUTDOWN pin can
be disabled, taking the
SP213EH out of the
shutdown mode.
All receivers that are active during shutdown
maintain 500mV (typical) of hysteresis.
SD EN
Power
Up/Down
Receiver
Outputs
Up
Enable
0
Up
Tri-state
0
Down
Enable
0
Down
Tri-State
Table2.SP213EHWake-UpTruthTable
SD EN
Power
Up/Down
Receiver
Outputs
0
Up
Enable
0
Up
Tri-state
0
Down
Enable
Down
Tri-State
Table 3. SP2EH Receiver Truth Table
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| VE-BNW-IV-S | CONVERTER MOD DC/DC 5.5V 150W |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP211EHET | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:High Speed +5V High Performance RS232 Transceivers |
| SP211EHET-L | 功能描述:RS-232接口集成电路 460KBPS 5V 4DRV/5RCV RS-232 -40-85C RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| SP211EHET-L/TR | 功能描述:RS-232接口集成电路 460KBPS 5V 4DRV/5RCV RS-232 -40-85C RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: |
| SP211ET | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:+5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| SP211ET/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:+5V High-Speed RS-232 Transceivers with 0.1mF Capacitors |
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