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參數(shù)資料
| 型號： | ISL3241EIRZ |
| 廠商： | Intersil |
| 文件頁數(shù)： | 16/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX RS232 ESD-PROT 32-QFN |
| 產(chǎn)品培訓(xùn)模塊： | Solutions for Industrial Control Applications |
| 標(biāo)準(zhǔn)包裝： | 60 |
| 類型： | 收發(fā)器 |
| 驅(qū)動器/接收器數(shù)： | 3/5 |
| 規(guī)程： | RS232 |
| 電源電壓： | 2.7 V ~ 3.6 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 32-VFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 32-QFN 裸露焊盤（5x5） |
| 包裝： | 管件 |
ISL3241E, ISL3243E
9
FN6768.2
June 18, 2012
ISL324xE monitor receivers remain active even during manual
powerdown, making them extremely useful for Ring Indicator
monitoring. Standard receivers driving powered down
peripherals must be disabled to prevent current flow through
renders them useless for wake up functions, but the
corresponding monitor receiver can be dedicated to this task
as shown in Figure 6.
Low Power Operation
These 3V devices require a nominal supply current of 0.3mA,
even at VCC = 3.6V, during normal operation (not in power-
down mode). This is considerably less than the 5mA to 11mA
current required by comparable 5V RS-232 devices, allowing
users to reduce system power simply by switching to this new
family.
Power-down Functionality
The already low current requirement drops significantly when
the device enters powerdown mode. In powerdown, supply
current drops to less than 1A, because the on-chip charge
pump turns off (V+ collapses to VCC, V- collapses to GND), and
the transmitter outputs three-state. Inverting receiver outputs
disable only in manual powerdown (ISL3243E) or when EN =
mode makes the ISL324xE ideal for battery powered and
portable applications.
TABLE 2. POWER-DOWN AND ENABLE LOGIC TRUTH TABLE (NOTE: “H” = VL)
RS-232
SIGNAL
PRESENT
AT
RECEIVER
INPUT?
SHDN OR
FORCEOFF
INPUT
FORCEON
INPUT
EN
INPUT
TRANSMITTER
OUTPUTS
RECEIVER
OUTPUTS
ROUTB
OUTPUTS
INVALID
OUTPUT
MODE OF OPERATION
ISL3241E
N/A
L
N/A
L
High-Z
Active
N/A
Manual Power-down
N/A
L
N/A
H
High-Z
Active
N/A
Manual Power-down w/Rcvr. Disabled
N/A
H
N/A
L
Active
N/A
Normal Operation
N/A
H
N/A
H
Active
High-Z
Active
N/A
Normal Operation w/Rcvr. Disabled
ISL3243E
NO
H
N.A.
Active
L
Normal Operation
(Auto Powerdown Disabled)
YES
H
L
N.A.
Active
H
Normal Operation
(Auto Power-down Enabled)
NO
H
L
N.A.
High-Z
Active
L
Power-down Due to Auto Power-down
Logic
YES
L
X
N.A.
High-Z
Active
H
Manual Power-down
NO
L
X
N.A.
High-Z
Active
L
Manual Power-down
FIGURE 5. POWER DRAIN THROUGH POWERED DOWN
PERIPHERAL
OLD
VCC
POWERED
GND
SHDN = GND
VCC
Rx
Tx
CURRENT
VOUT = VCC
FLOW
RS-232 CHIP
DOWN
UART
VCC
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| ISL3241EIRZ-T | 功能描述:IC TXRX RS232 ESD-PROT 32-QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR) |
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| ISL32430EIBZ-T | 功能描述:IC TRANSCEIVER 14-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:* 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:發(fā)射器 驅(qū)動器/接收器數(shù):4/0 規(guī)程:RS422，RS485 電源電壓:4.75 V ~ 5.25 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) |
| ISL32430EIBZ-T7A | 功能描述:RS-422/RS-485 接口 IC 40V OVP 15V CMR -40+ 85 3V RS-485 FL DUP 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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-28 封裝:Tube |
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