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参数资料
| 型号： | ISL4221EIRZ |
| 厂商： | Intersil |
| 文件页数： | 3/14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 |
11
FN6045.6
May 13, 2010
Interconnection with 3V and 5V Logic
The ISL4221E, ISL4223E and ISL3232E directly interface
with 5V CMOS and TTL logic families. Nevertheless, with the
ISL4221E, ISL4223E and ISL3232E at 3.3V, and the logic
supply at 5V, AC, HC, and CD4000 outputs can properly
drive ISL4221E, ISL4223E and ISL3232E inputs, but
ISL4221E, ISL4223E and ISL3232E outputs do not reach
the minimum VIH for these logic families. See Table 3 for
more information.
±15kV ESD Protection
All pins on ISL4221E, ISL4223E and ISL3232E devices
include ESD protection structures, but the RS-232 pins
(transmitter outputs and receiver inputs) incorporate
advanced structures, which allow them to survive ESD
events up to ±15kV. The RS-232 pins are particularly
vulnerable to ESD damage because they typically connect to
an exposed port on the exterior of the finished product.
Simply touching the port pins, or connecting a cable, can
cause an ESD event that might destroy unprotected ICs.
These new ESD structures protect the device whether or not
it is powered-up, protect without allowing any latchup
mechanism to activate, and don’t interfere with RS-232
signals as large as ±25V.
Human Body Model (HBM) Testing
As the name implies, this test method emulates the ESD
event delivered to an IC during human handling. The tester
delivers the charge through a 1.5k
Ω current limiting resistor,
making the test less severe than the IEC61000 test which
utilizes a 330
Ω limiting resistor. The HBM method
determines an ICs ability to withstand the ESD transients
typically present during handling and manufacturing. Due to
the random nature of these events, each pin is tested with
respect to all other pins. The RS-232 pins on “E” family
devices can withstand HBM ESD events to
±15kV.
IEC61000-4-2 Testing
The IEC61000-4-2 test method applies to finished
equipment, rather than to an individual IC. Therefore, the
pins most likely to suffer an ESD event are those that are
exposed to the outside world (the RS-232 pins in this case),
and the IC is tested in its typical application configuration
(power applied) rather than testing each pin-to-pin
combination. The lower current limiting resistor coupled with
the larger charge storage capacitor yields a test that is much
more severe than the HBM test. The extra ESD protection
built into this device’s RS-232 pins allows the design of
equipment meeting level 4 criteria without the need for
additional board level protection on the RS-232 port.
AIR-GAP DISCHARGE TEST METHOD
For this test method, a charged probe tip moves toward the
IC pin until the voltage arcs to it. The current waveform
delivered to the IC pin depends on approach speed,
humidity, temperature, etc., so it is difficult to obtain
repeatable results. The “E” device RS-232 pins withstand
±15kV air-gap discharges.
CONTACT DISCHARGE TEST METHOD
During the contact discharge test, the probe contacts the
tested pin before the probe tip is energized, thereby
eliminating the variables associated with the air-gap
discharge. The result is a more repeatable and predictable
test, but equipment limits prevent testing devices at voltages
higher than ±8kV. All “E” family devices survive ±8kV contact
discharges on the RS-232 pins.
TABLE 3. LOGIC FAMILY COMPATIBILITY WITH VARIOUS
SUPPLY VOLTAGES
SYSTEM
POWER-SUPPLY
VOLTAGE
(V)
VCC
SUPPLY
VOLTAGE
(V)
COMPATIBILITY
3.3
Compatible with all CMOS
families.
5
Compatible with all TTL and
CMOS logic families.
5
3.3
Compatible with ACT and HCT
CMOS, and with TTL. ISL4221E,
ISL4223E and ISL3232E outputs
are incompatible with AC, HC,
and CD4000 CMOS inputs.
ISL3232E, ISL4221E, ISL4223E
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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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