SP 3238 A and SP 3247 E 3

SP 3238 A and SP 3247 E 3 V to 5 V RS-232 Transceivers with Auto On-Line® Plus

Features & Benefits • SP 3238 A at 250 Kbps data rate • SP 3247 E at 1 Mbps data rate • Power-saving Auto On-Line® Plus • Automatically enters 1μA mode when idle • STATUS output detects cable plug/unplug • Automatic wakeup on signal activity • Complete terminal or PC serial port • 5 drivers, 3 receivers, with extra /Rx • ± 15 k. V ESD (IEC 1000 -4 -2) • Small, Pb-free packages • 28 pin TSSOP, SSOP Company Confidential 2

Robust ESD Protection • Enhanced durability for use in demanding applications • Built-in protection against accidental static discharge • ± 15, 000 Volt Human Body Model • ± 15, 000 Volt Air-Gap (IEC 61000 -4 -2) • ± 8, 000 Volt Contact Discharge (IEC 61000 -4 -2) • Eliminate costly external TVS components ESD Pulse Examples of Typical Static Voltage Potentials Means of Generation 10 -25% RH 65 -90% RH Walking across carpet 35, 000 V 1, 500 V Walking across vinyl tile 12, 000 V 250 V Worker at bench 6, 000 V 100 V Company Confidential Chair with urethane 3

Auto On-Line® Plus saves power • Ordinary RS 232 consumes a lot of power • Drivers are always on and driving into a 5 kΩ load impedance • Charge pumps running continually • Shut down drivers/pumps when idle to save power; wake-up to transmit data • Automatic Shutdown/Wakeup –Auto On-Line® Plus • No user intervention or software required • Transceiver goes to 1 n. A sleep mode when idle • Automatically comes back on-line if it sees a data transition on receiver input or driver input Company Confidential 4

Target Applications • Power-saving RS 232 transceiver: • SP 3238 A in computer, telecom, consumer and embedded applications • SP 3247 E for telecom, instrumentation, POS and embedded applications • Serial port DTE transceiver for laptop or portable PC • Synch cables/cradles for handhelds • Use in conjunction with low-voltage UARTs or microcontrollers • Cross with MAX 3238/48, ICL 3238 Company Confidential 5

Small Standard Package Footprint Small, Pb-free packages 28 pin TSSOP, SSOP Company Confidential 6

New Auto On-Line® Plus RS 232 Name Isupply (m. A) Active IQ(u. A) Auto On-line Plus Vin MIN. (V) Max Data Rate (bps) Drivers Receivers SP 3224 0. 7 1 3 -5. 5 250 k 2 2 SP 3225 0. 7 1 3 -5. 5 1 M 2 2 SP 3226 0. 7 1 3 -5. 5 250 k 1 1 SP 3227 0. 7 1 3 -5. 5 1 M 1 1 SP 3238 A 1 1 3 -5. 5 250 k 5 3 SP 3247 1 1 3 -5. 5 1 M 5 3 SP 3244 1 1 3 -5. 5 250 k 3 5 SP 3245 1 1 3 -5. 5 1 M 3 5 Company Confidential 7

SP 3238 A Competitive Update Vendor Part Number Cross-Type Direct Equivalents Maxim MAX 3238 E Drop-In TI MAX 3238 E Drop-In Intersil ICL 3238 E Drop-In Similar Devices (without Auto On-Line® Plus) Exar SP 3238 E Pin-compatible Maxim MAX 3238 Pin-compatible Intersil ICL 3238 Pin-compatible Company Confidential 8

SP 3247 E Competitive Update Vendor Part Number Cross-Type Direct Equivalents Maxim MAX 3237 E Drop-In Similar Devices (without Auto On-Line® Plus) Intersil ICL 3237 Pin-compatible Exar SP 3238 E Pin-compatible Company Confidential 9

Selection Guide Part Number Temp. Package Ro. HS SP 3238 AECA-L 0 To +70 o. C 28 pin SSOP Y SP 3238 AECY-L 0 To +70 o. C 28 pin TSSOP Y SP 3238 AEEA-L -45 to 85 o. C 28 pin SSOP Y SP 3238 AEEY-L -45 to 85 o. C 28 pin TSSOP Y SP 3247 ECA-L 0 To +70 o. C 28 pin SSOP Y SP 3247 ECY-L 0 To +70 o. C 28 pin TSSOP Y SP 3247 EEA-L -45 to 85 o. C 28 pin SSOP Y SP 3247 EEY-L -45 to 85 o. C 28 pin TSSOP Y Company Confidential 10

Value Proposition • High ESD Robustness – 15 k. V IEC (air-gap) • Auto On-Line® Plus – save power by shutting down the drivers/pumps when not needed to transmit data • Equivalent to other automatic power-saving features • Maxim “Shutdown Plus” • Texas Instruments “Powerdown Plus” • Intersil “Enhanced Automatic Powerdown” BATT 100% Company Confidential 11

Next Steps • Visit Commercial and Industrial customers next month • Communicate SP 3238 A-3247 E Value Propositions • Get Design Win! Company Confidential 12