- 您现在的位置：买卖IC网 > PDF目录299230 > ISL3241EIRZ (INTERSIL CORP) QFN Packaged, ±15kV ESD Protected, +2.7V to +3.6V, 250kbps, RS-232 Transmitters/Receivers with Separate Logic Supply Pin; Temperature Range: -40°C to 85°C; Package: 32-QFN PDF资料下载
参数资料
| 型号： | ISL3241EIRZ |
| 厂商： | INTERSIL CORP |
| 元件分类： | Buffer和线驱动 |
| 英文描述： | QFN Packaged, ±15kV ESD Protected, +2.7V to +3.6V, 250kbps, RS-232 Transmitters/Receivers with Separate Logic Supply Pin; Temperature Range: -40°C to 85°C; Package: 32-QFN |
| 中文描述： | LINE TRANSCEIVER, PQCC32 |
| 封装： | 5 X 5 MM, ROHS COMPLIANT, PLASTIC, QFN-32 |
| 文件页数： | 3/16页 |
| 文件大小： | 549K |
| 代理商： | ISL3241EIRZ |
11
FN6768.1
May 13, 2010
receiver output high voltage, to values compatible with the
logic device’s I/O levels. Tailoring the ISL324XE’s logic pin
input switching points and output levels to the supply voltage
of the UART, ASIC, or controller eliminates the need for a
level shifter/translator between the two ICs.
ISL324xE’s typical VIH and VIL levels for several VL values.
Note that the VL supply current increases significantly when
If logic translation isn’t required, connect VL to VCC.
INVALID Output (ISL3243E Only)
The INVALID output always indicates whether or not a valid
RS-232 signal (see Figure 10) is present at any of the
receiver inputs (see Table 2), giving the user an easy way to
determine when the interface block should power down.
Invalid receiver levels occur whenever the driving
peripheral’s outputs are shut off (powered down) or when the
RS-232 interface cable is disconnected. In the case of a
disconnected interface cable where all the receiver inputs
are floating (but pulled to GND by the internal receiver pull
down resistors), the INVALID logic detects the invalid levels
and drives the output low. The power management logic
then uses this indicator to power-down the interface block.
Reconnecting the cable restores valid levels at the receiver
inputs, INVALID switches high, and the power management
logic wakes up the interface block. INVALID can also be
used to indicate the DTR or RING INDICATOR signal, as
long as the other receiver inputs are floating, or driven to
GND (as in the case of a powered down driver).
INVALID switches low after invalid levels have persisted on
all of the receiver inputs for more than 20s (see Figure 11).
INVALID switches back high 1s after detecting a valid
RS-232 level on a receiver input. INVALID operates in all
modes (forced or automatic power-down, or forced on), so it
is also useful for systems employing manual power-down
circuitry. When automatic powerdown is utilized, INVALID = 0
indicates that the ISL3243E is in powerdown mode.
Automatic Power-down (ISL3243E Only)
Even greater power savings is available by using the
ISL3243E which features an automatic power-down
function. When no valid RS-232 voltages (see Figure 11) are
sensed on any receiver input for 20s, the charge pump and
TABLE 3. VIH AND VIL vs VL FOR VCC = 3.3V
VL (V)
VIH (V)
VIL (V)
1.6
0.85
0.8
1.8
0.95
0.9
2.5
1.25
1.2
FIGURE 9. USING VL PIN TO ADJUST LOGIC LEVELS
GND
TXD
RXD
VCCL = +1.8V
UART/PROCESSOR
GND
TIN
ROUT
VCCI = +3.3V
RS-232 IC WITH NO
VOH ≥ 3V
GND
TXD
VCCL = +1.8V
UART/PROCESSOR
GND
VL
VCCI = +3.3V
ISL324xE
VOH ≤ 1.8V
VIH ≤ 1V
VOH ≤ 1.8V
VIH ≥ 2V
VOH ≤ 1.8V
VL PIN
TIN
ROUT
RXD
INPUT
DIODE
INPUT
DIODE
FIGURE 10. DEFINITION OF VALID RS-232 RECEIVER LEVELS
0.3V
-0.3V
-2.7V
2.7V
INVALID LEVEL - POWER-DOWN OCCURS AFTER 20
μs
VALID RS-232 LEVEL - ISL3243E IS ACTIVE
INDETERMINATE - POWERDOWN MAY OR
MAY NOT OCCUR
RECEIVER
INPUTS
TRANSMITTER
OUTPUTS
INVALID
OUTPUT
V+
VCC
0
V-
VL
0
tINVL
tINVH
INVALID
REGION
}
FIGURE 11. AUTOMATIC POWERDOWN AND INVALID
TIMING DIAGRAMS
AUTOPWDN
PWR UP
ISL3241E, ISL3243E
相关PDF资料 |
PDF描述 |
|---|---|
| ISL3241EIRZ-T | QFN Packaged, ±15kV ESD Protected, +2.7V to +3.6V, 250kbps, RS-232 Transmitters/Receivers with Separate Logic Supply Pin; Temperature Range: -40°C to 85°C; Package: 32-QFN |
| ISL3243EIRZ | QFN Packaged, ±15kV ESD Protected, +2.7V to +3.6V, 250kbps, RS-232 Transmitters/Receivers with Separate Logic Supply Pin; Temperature Range: -40°C to 85°C; Package: 32-QFN |
| ISL3243EIRZ-T | QFN Packaged, ±15kV ESD Protected, +2.7V to +3.6V, 250kbps, RS-232 Transmitters/Receivers with Separate Logic Supply Pin; Temperature Range: -40°C to 85°C; Package: 32-QFN |
| ISL3293EFHZ-T | ±16.5kV ESD Protected, +125°C, 3.0V to 5.5V, SOT-23/TDFN Packaged, Low Power, RS-485/RS-422 Transmitters; Temperature Range: Full-Range Ind; Package: 6-SOT-23 T&R |
| ISL3293EIHZ-T | ±16.5kV ESD Protected, +125°C, 3.0V to 5.5V, SOT-23/TDFN Packaged, Low Power, RS-485/RS-422 Transmitters; Temperature Range: -40°C to 85°C; Package: 6-SOT-23 T&R |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL3241EIRZ-T | 功能描述:IC TXRX RS232 ESD-PROT 32-QFN RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:250 系列:- 类型:收发器 驱动器/接收器数:2/2 规程:RS232 电源电压:3 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR) |
| ISL32430E | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:?±40V Fault Protected, 3.3V to 5V, ?±15V Common Mode Range, RS-485/RS-422 Transceivers With Cable Invert and ?±15kV ESD |
| ISL32430EIBZ | 功能描述:IC TRANSCEIVER 14-SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:* 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:发射器 驱动器/接收器数:4/0 规程:RS422，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) |
| ISL32430EIBZ-T | 功能描述:IC TRANSCEIVER 14-SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:* 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:发射器 驱动器/接收器数:4/0 规程:RS422，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (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 数据速率:1136 Kbps 工作电源电压:3 V to 5.5 V 电源电流:5.9 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-28 封装:Tube |
发布紧急采购，3分钟左右您将得到回复。