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| 型号： | ISL4221EIRZ |
| 厂商： | Intersil |
| 文件页数： | 2/14页 |
| 文件大小： | 0K |
| 描述： | IC TXRX 1TX/1RX 3V RS-232 16-QFN |
| 标准包装： | 60 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | RS232 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-VQFN 裸露焊盘 |
| 供应商设备封装： | 16-QFN-EP（5x5） |
| 包装： | 管件 |
10
FN6045.6
May 13, 2010
Power Supply Decoupling
In most circumstances a 0.1F bypass capacitor is
adequate. In applications that are particularly sensitive to
power supply noise, decouple VCC to ground with a
capacitor of the same value as the charge-pump capacitor C1.
Connect the bypass capacitor as close as possible to the IC.
Transmitter Outputs when Exiting
Power-down
Figure 8 shows the response of two transmitter outputs
when exiting power-down mode. As they activate, the two
transmitter outputs properly go to opposite RS-232 levels,
with no glitching, ringing, nor undesirable transients. Each
transmitter is loaded with 3k
Ω in parallel with 2500pF.
Note that the transmitters enable only when the magnitude
of the supplies exceed approximately 3V.
Operation Down to 2.7V
ISL4221E, ISL4223E and ISL3232E transmitter outputs
meet RS-562 levels (±3.7V), at the full data rate, with VCC
as low as 2.7V. RS-562 levels typically ensure inter
operability with RS-232 devices.
High Data Rates
The ISL4221E, ISL4223E and ISL3232E maintain the RS-
232 ±5V minimum transmitter output voltages even at high
data rates. Figure 9 details a transmitter loopback test
circuit, and Figure 10 illustrates the loopback test result at
120kbps. For this test, all transmitters were simultaneously
driving RS-232 loads in parallel with 1000pF, at 120kbps.
Figure 11 shows the loopback results for a single transmitter
driving 1000pF and an RS-232 load at 250kbps. The static
transmitters were also loaded with an RS-232 receiver.
TIME (20s/DIV)
T1
T2
2V/DIV
5V/DIV
VCC = +3.3V
FORCEOFF
FIGURE 8. TRANSMITTER OUTPUTS WHEN EXITING
POWER-DOWN
C1 - C4 = 0.1F
FIGURE 9. TRANSMITTER LOOPBACK TEST CIRCUIT
FIGURE 10. LOOPBACK TEST AT 120kbps
FIGURE 11. LOOPBACK TEST AT 250kbps
ISL4221E, ISL4223E
VCC
FORCEOFF
C1
C2
C4
C3
+
1000pF
V+
V-
5k
TIN
ROUT
C1+
C1-
C2+
C2-
RIN
TOUT
+
VCC
0.1F
VCC
FORCEON
T1IN
T1OUT
R1OUT
TIME (5s/DIV)
VCC = +3.3V
5V/DIV
C1 - C4 = 0.1F
T1IN
T1OUT
R1OUT
TIME (2s/DIV)
5V/DIV
VCC = +3.3V
C1 - C4 = 0.1F
ISL3232E, ISL4221E, ISL4223E
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相关代理商/技术参数 |
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|---|---|
| ISL4221EIRZ-T | 功能描述:IC XMITTER/RCVR ESD RS232 16-QFN 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) |
| ISL4223E | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:QFN Packaged, 【15kV ESD Protected, +2.7V to +5.5V, 150nA, 250kbps, RS-232 Transmitters/Receivers |
| ISL4223EIR | 功能描述:IC TXRX RS232 2.7-5.5V ESD 20QFN RoHS:否 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:1,000 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-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) |
| ISL4223EIR-T | 功能描述:IC TXRX 2TX/2RX 3V RS-232 20-QFN RoHS:否 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:25 系列:- 类型:收发器 驱动器/接收器数:2/2 规程:RS232 电源电压:4.5 V ~ 5.5 V 安装类型:通孔 封装/外壳:16-DIP（0.300"，7.62mm） 供应商设备封装:16-PDIP 包装:管件 |
| ISL4223EIRZ | 功能描述:RS-232接口集成电路 3V RS-232 2TX/2RX TRANSC 20LD 5X5 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: |
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