参数资料
| 型号： | ISL4245EIRZ-T |
| 厂商： | Intersil |
| 文件页数： | 5/17页 |
| 文件大小： | 0K |
| 描述： | IC XMITTER/RCVR ESD RS232 32-QFN |
| 标准包装： | 1 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 3/5 |
| 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： | 32-VFQFN 裸露焊盘 |
| 供应商设备封装： | 32-QFN 裸露焊盘（5x5） |
| 包装： | 标准包装 |
| 其它名称： | ISL4245EIRZ-TDKR |
13
FN8038.5
May 13, 2010
Mouse Driveability
The ISL424XE are specifically designed to power a serial
mouse while operating from low voltage supplies. Figure 11
shows the transmitter output voltages under increasing load
current. The on-chip switching regulator ensures the
transmitters will supply at least ±5V during worst case
conditions (15mA for paralleled V+ transmitters, 7.3mA for
single V- transmitter).
High Data Rates
The ISL4238E, ISL4244E, ISL4245 maintain the RS-232
±5V minimum transmitter output voltages even at high data
rates. Figure 12 details a transmitter loopback test circuit,
and Figure 13 illustrates the ISL4238E/ISL4244E loopback
test result at 120kbps. For this test, all transmitters were
simultaneously driving RS-232 loads in parallel with 1000pF,
at 120kbps. Figure 14 shows the ISL4238E/ISL4244E
loopback results for a single transmitter driving 1000pF and
an RS-232 load at 250kbps. Figure 15 illustrates the
ISL4245E loopback test result at 250kbps. For this test, all
transmitters were simultaneously driving RS-232 loads in
parallel with 1000pF, at 250kbps. Figure 16 shows the
ISL4245E loopback results for a single transmitter driving
250pF and an RS-232 load at 1Mbps. 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 10. TRANSMITTER OUTPUTS WHEN EXITING
POWER-DOWN
C1 to C4 = 0.1F
FIGURE 11. TRANSMITTER OUTPUT VOLTAGE vs LOAD
CURRENT (PER TRANSMITTER, i.e., DOUBLE
CURRENT AXIS FOR TOTAL VOUT+ CURRENT)
TRANSMIT
T
E
R
OU
TP
U
T
VOL
T
AGE
(
V
)
LOAD CURRENT PER TRANSMITTER (mA)
024
68
10
-6
-4
-2
0
2
4
6
-5
-3
-1
1
3
5
1
3579
VOUT+
VOUT -
VCC
VOUT+
VOUT -
T1
T2
T3
VCC = 3.0V
ISL424XE
FIGURE 12. TRANSMITTER LOOPBACK TEST CIRCUIT
FIGURE 13. ISL4238E/ISL4244E LOOPBACK TEST AT 120kbps
FIGURE 14. ISL4238E/ISL4244E LOOPBACK TEST AT
250kbps (CL = 1000pF)
ISL4238E
VCC
C1
C2
C4
C3
+
CL
V+
V-
5k
TIN
ROUT
C1+
C1-
C2+
C2-
RIN
TOUT
+
VCC
0.1F
VCC
FORCEOFF
FORCEON
ISL4244E
ISL4245
T1IN
T1OUT
R1OUT
5s/DIV
VCC = +3.3V
5V/DIV.
C1 to C4 = 0.1F
T1IN
T1OUT
R1OUT
2s/DIV.
VCC = +3.3V
5V/DIV.
C1 - C4 = 0.1F
ISL4238E, ISL4244E, ISL4245E
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL4260E | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:QFN Packaged, ±15kV ESD Protected, +3V to +5.5V, 150nA, 250kbps, RS-232 Transmitters/Receivers with Separate Logic Supply |
| ISL4260EIR | 功能描述:IC 3DRVR/2RCVR RS232 3V 32-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 |
| ISL4260EIR-T | 功能描述:IC 3DRVR/2RCVR RS232 3V 32-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 |
| ISL4260EIRZ | 功能描述:IC 3DRVR/2RCVR RS232 3V 32-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) |
| ISL4260EIRZ-T | 功能描述:IC XMITTER/RCVR ESD RS232 32-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) |
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