ISL83387EIVZ Renesas

Datasheet ISL83387E 15kV ESD Protected, +3V to +5.5V, 1Microamp, 250kbps, RS-232 Transceivers with Enhanced Automatic Powerdown The ISL83387E is a 3.0V to 5.5V powered RS-232 Features transceiver that meets ElA/TIA-232 and V.28/V.24 V supply pin for compatibility with mixed voltage L specifications, even at V = 3.0V. Additionally, it CC systems provides 15kV ESD protection (IEC61000-4-2 Air ESD protection for RS-232 I/O pins to 15kV Gap and Human Body Model) on transmitter outputs (IEC61000) and receiver inputs (RS-232 pins). Targeted applications are industrial laptop computers, Low power, pin compatible upgrade for MAX3387E Palmtops, PDAs, and notebooks where the low Manual and enhanced automatic powerdown operational power consumption and even lower features standby power consumption is critical. Efficient on-chip charge pumps coupled with manual and Meets EIA/TIA-232 and V.28/V.24 specifications at enhanced automatic powerdown functions reduce the 3V standby supply current to a 1A trickle. The TSSOP On-chip charge pumps require only four external packaging and the use of small, low value capacitors 0.1F capacitors ensure board space savings. Data rates greater than Receivers stay active in powerdown 250kbps are ensured at worst case load conditions. Very low supply current: 300A The ISL83387E features a V pin that adjusts the L logic pin output levels and input thresholds to values Assured minimum data rate: 250kbps compatible with the V powering the external logic CC Wide power supply range: Single +3V to +5.5V (for example, a UART). Low supply current in powerdown state: < 1A The ISL83387E includes an enhanced automatic Pb-Free (RoHS compliant) power-down function that powers down the on-chip power-supply and driver circuits. Automatic Applications powerdown occurs when all receiver and transmitter inputs detect no signal transitions for a period of 30 Any system requiring RS-232 communication ports seconds. The ISL83387E powers back up Battery powered, hand-held, and portable automatically, when it senses a transition on any equipment transmitter or receiver input. Industrial laptops. Palmtops, and PDAs Table 1 summarizes the features of the ISL83387E Digital cameras and Application Note AN9863 summarizes the features of each device comprising the 3V RS-232 family. Related Literature For a full list of related documents, visit our website: ISL83387E device page Table 1. Summary of Features No. of No. of Data Rate Rx. Enable V Logic Manual Enhanced Automatic L Part Number Tx. Rx. (kbps) Function Supply Pin Power-Down Powerdown Function ISL83387E 3 3 250 No Yes Yes Yes FN6040 Rev.2.00 Page 1 of 22 Apr.19.19ISL83387E Contents 1. Overview . 3 1.1 Typical Operating Circuit 3 1.2 Ordering Information . 3 1.3 Pin Configuration 4 1.4 Pin Descriptions . 4 2. Specifications . 5 2.1 Absolute Maximum Ratings 5 2.2 Thermal Information 5 2.3 Recommended Operating Conditions 5 2.4 Electrical Specifications . 5 3. Typical Performance Curves . 8 4. Application Information . 9 4.1 Charge-Pump 9 4.1.1 Charge-Pump Abs Max Ratings 9 4.2 Transmitters . 10 4.3 Receivers . 11 4.4 Low Power Operation . 11 4.5 Powerdown Functionality . 11 4.5.1 Software Controlled (Manual) Powerdown . 11 4.5.2 INVALID Output 12 4.5.3 Enhanced Automatic Powerdown 13 4.5.4 Emulating Standard Automatic Powerdown . 14 4.5.5 Hybrid Automatic Powerdown Options 15 4.6 V Logic Supply Input . 15 L 4.7 Capacitor Selection . 15 4.8 Power Supply Decoupling 15 4.9 Transmitter Outputs when Exiting Power-Down . 15 4.10 High Data Rates . 16 4.11 Interconnection with 3V and 5V Logic . 17 5. 15kV ESD Protection . 18 5.1 Human Body Model (HBM) Testing . 18 5.2 IEC61000-4-2 Testing . 18 5.2.1 Air-Gap Discharge Test Method 18 5.2.2 Contact Discharge Test Method 18 6. Die Characteristics . 19 7. Revision History 20 8. Package Outline Drawing 21 FN6040 Rev.2.00 Page 2 of 22 Apr.19.19