ISL83239E
±15kV ESD Protected, +3V To +5.5V, 0.01 Microamp, 250kbps, RS-232 Transmitter/Receiver

Key Features

• ESD Protection For RS-232 I/O Pins to ±15kV (IEC61000)
• Drop In Replacement for SP3239E
• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
• RS-232 Compatible Outputs at 2.7V
• Latch-Up Free
• On-Chip Voltage Converters Require Only Four External Capacitors
• Manual Powerdown Feature
• Flow Through Pinout
• Rx and Tx Hysteresis For Improved Noise Immunity
• Guaranteed Minimum Data Rate 250kbps
• Guaranteed Minimum Slew Rate 6V/µs
• Wide Power Supply Range Single +3V to +5.5V
• Low Supply Current in Powerdown State 10nA

Description

The Intersil ISL83239E contains 3.0V to 5.5V powered RS-232 transmitters/receivers which meet ElA/TIA-232 and V.28/V.24 specifications, even at V_CC = 3.0V. Additionally, it provides ±15kV ESD protection (IEC61000-4-2 Air Gap and Human Body Model) on transmitter outputs and receiver inputs (RS-232 pins). Targeted applications are cell phones, PDAs, Palmtops, and data cables where the low operational, and even lower standby, power consumption is critical. Efficient on-chip charge pumps, coupled with the manual powerdown function, reduce the standby supply current to a 10nA trickle. Small footprint packaging, and the use of small, low value capacitors ensure board space savings as well. Data rates greater than 250kbps are guaranteed at worst case load conditions.

The ISL83239E is a 5 driver, 3 receiver device that also includes a noninverting always-active receiver for "wake-up" capability.

Table 1 summarizes the features of the device represented by this data sheet, while Application Note AN9863 summarizes the features of each device comprising the ICL32XX 3V family.

Applications

• Any System Requiring RS-232 Communication Ports
• Battery Powered, Hand-Held, and Portable Equipment
• Laptop Computers, Notebooks, Palmtops
• Modems, Printers and other Peripherals
• PDA Data Cradles and Cables
• Cellular/Mobile Phones, Data Cables