ISL4245EIRZ-T

The Intersil ISL4245E device is 2.7V to 5.5V powered RS-232 transmitters/receivers which meet ElA/TIA-232 and V.28/V.24 specifications, even at VCC = 3.0V. Additionally, they provide ±15kV ESD protection (IEC61000-4-2 Air Gap and Human Body Model) on transmitter outputs and receiver inputs (RS-232 pins). Targeted applications are PDAs, Palmtops, and notebook and laptop computers where the low operational, and even lower standby power consumption is critical. Efficient on-chip charge pumps, coupled with manual and enhanced automatic power-down functions, reduce the standby supply current to a 10nA trickle. Tiny 5mmx5mm Quad Flat No-Lead (QFN) packaging and the use of small, low value capacitors ensure board space savings as well. Data rates greater than 250kbps (ISL4238E/ISL4244E)/1Mbps (ISL4245E) are guaranteed at worst case load conditions. The ISL424xE are 3 driver, 5 receiver (DTE) devices that, coupled with the QFN package, provide the industry’s smallest, lowest power complete serial port suitable for PDAs, and laptop or notebook computers. The 32 Ld 5x5 QFN requires 60% less board area than a 28 lead TSSOP, and is nearly 20% thinner. The devices also include a noninverting always-active receiver for “wake-up” capability.

• Parameters Fully Specified for 10% Tolerance Supplies and Full Industrial Temp Range
• Available in Small QFN (5mm x 5mm) Package which is 60% Smaller than a 28 Lead TSSOP
• ESD Protection for RS-232 I/O Pins to ±15kV (IEC61000)
• Lowest Supply Current in Power-down : 10nA
• Flow Through Pinouts
• Manual and Enhanced Automatic Power-down Features
• Wide Power Supply Range : Single +2.7V to +5.5V
• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
• RS-232 Compatible with VCC = 2.7V
• Pb-Free Available (RoHS Compliant)