ICL3238E Data Sheet July 2004 FN6012.3 15kV ESD Protected, +3V to +5.5V, 10nA, Features 250kbps, RS-232 Transceiver with Pb-Free Available as an Option (see Ordering Info) Enhanced Automatic Powerdown ESD Protection for RS-232 I/O Pins to 15kV (IEC61000) The Intersil ICL3238E contains 3.0V to 5.5V powered and Logic Inputs. Active Feedback Resistors on T RS-232 transmitters/receivers which meet ElA/TIA-232 and X V.28/V.24 specifications, even at V = 3.0V. Additionally, it Manual and Enhanced Automatic Powerdown Features CC provides 15kV ESD protection (IEC61000-4-2 Air Gap and Pin Compatible Replacement for MAX3238E, MAX3238, Human Body Model) on transmitter outputs and receiver SP3238E inputs (RS-232 pins). Targeted applications are cell phones, Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V Palmtops, and data cables where the low operational, and even lower standby, power consumption is critical. Efficient RS-232 Compatible Outputs at 2.7V Supply on-chip charge pumps, coupled with manual and enhanced Flow Through Pinout automatic powerdown functions, reduce the standby supply current to a 10nA trickle. Small footprint packaging, and the Latch-Up Free use of small, low value capacitors ensure board space On-Chip Voltage Converters Require Only Four External savings as well. Data rates greater than 250kbps are Capacitors guaranteed at worst case load conditions providing Receiver and Transmitter Hysteresis For Improved Noise compatibility with popular PC communication software. Immunity The ICL3238E is a 5 driver, 3 receiver device optimized for Guaranteed Minimum Data Rate . 250kbps DCE applications with full hardware handshaking. It also includes a noninverting always-active receiver for RING Guaranteed Minimum Slew Rate . 6V/s INDICATOR monitoring. Wide Power Supply Range . Single +3V to +5.5V This device, features an enhanced automatic powerdown Low Supply Current in Powerdown State . 10nA function which powers down the on-chip power-supply and driver circuits. This occurs when all receiver and transmitter Applications inputs detect no signal transitions for a period of 30s. The Any System Requiring RS-232 Communication Ports ICL3238E powers back up, automatically, whenever it - Battery Powered, Hand-Held, and Portable Equipment senses a transition on any transmitter or receiver input. - Data Cradles The transmitter and logic inputs include active feedback - Modems, Printers and other Peripherals resistors that retain the input state once driven to a valid - Cellular/Mobile Phones, Data Cables logic level. Table 1 summarizes the features of the ICL3238E, while Application Note AN9863 summarizes the features of each device comprising the ICL32XXE 3V family. TABLE 1. SUMMARY OF FEATURES ENHANCED NO. OF DATA MANUAL AUTOMATIC PART NO. OF NO. OF MONITOR Rx. RATE Rx. ENABLE READY POWER- POWERDOWN NUMBER Tx. Rx. (R ) (kbps) FUNCTION OUTPUT DOWN FUNCTION OUTB ICL3238E 5 3 1 250 No No Yes Yes CAUTION: These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures. 1 1-888-INTERSIL or 321-724-7143 Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2003, 2004. All Rights Reserved All other trademarks mentioned are the property of their respective owners.ICL3238E Pinout Ordering Information ICL3238E (SSOP, TSSOP) TEMP. PKG. TOP VIEW o PART NO. RANGE ( C) PACKAGE DWG. ICL3238ECA 0 to 70 28 Ld SSOP M28.209 C2+ 1 28 C1+ GND 2 27 V+ ICL3238ECA-T 0 to 70 28 Ld SSOP M28.209 Tape and Reel V C2- 3 26 CC ICL3238ECAZ 0 to 70 28 Ld SSOP (Pb-Free) M28.209 V- 4 25 C1- (Note) T1 T1 5 24 OUT IN ICL3238ECAZ-T 0 to 70 28 Ld SSOP M28.209 T2 T2 6 23 OUT IN (Note) Tape and Reel (Pb-Free) T3 T3 7 22 OUT IN ICL3238EIA -40 to 85 28 Ld SSOP M28.209 21 R1 R1 8 IN OUT ICL3238EIA-T -40 to 85 28 Ld SSOP M28.209 9 20 R2 R2 IN OUT Tape and Reel 10 19 T4 T4 OUT IN ICL3238EIAZ -40 to 85 28 Ld SSOP M28.209 11 18 R3 R3 IN OUT (Note) (Pb-Free) 12 17 T5 T5 OUT IN ICL3238EIAZ-T -40 to 85 28 Ld SSOP M28.209 13 16 R1 OUTB FORCEON (Note) Tape and Reel (Pb-Free) 14 15 INVALID FORCEOFF ICL3238EIV-T -40 to 85 28 Ld TSSOP M28.173 Tape and Reel ICL3238EIVZ-T -40 to 85 28 Ld TSSOP M28.173 (Note) Tape and Reel (Pb-Free) NOTE: Intersil Pb-free products employ special Pb-free material sets molding compounds/die attach materials and 100% matte tin plate termination finish, which is compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J Std-020B. Pin Descriptions PIN FUNCTION V System Power Supply Input (3.0V to 5.5V). CC V+ Internally Generated Positive Transmitter Supply (+5.5V). V- Internally Generated Negative Transmitter Supply (-5.5V). GND Ground Connection. C1+ External Capacitor (Voltage Doubler) is connected to this lead. C1- External Capacitor (Voltage Doubler) is connected to this lead. C2+ External Capacitor (Voltage Inverter) is connected to this lead. C2- External Capacitor (Voltage Inverter) is connected to this lead. T TTL/CMOS Compatible Transmitter Inputs (Note 1). IN T 15kV ESD Protected, RS-232 Level (Nominally 5.5V) Transmitter Outputs. OUT R 15kV ESD Protected, RS-232 Compatible Receiver Inputs. IN R TTL/CMOS Level Receiver Outputs. OUT R TTL/CMOS Level, Noninverting, Always Enabled Receiver Outputs. OUTB INVALID Active Low Output that indicates if no valid RS-232 levels are present on any receiver input. FORCEOFF Active Low to Shut Down Transmitters and On-Chip Power Supply. This overrides any automatic circuitry and FORCEON (see Table 2, Note 1). FORCEON Active High Input to override automatic powerdown circuitry thereby keeping transmitters active. (FORCEOFF must be high, Note 1). NOTE: 1. These input pins incorporate positive feedback resistors. Once the input is driven to a valid logic level, the feedback resistor maintains that logic level until V is removed. Unused transmitter inputs may be left unconnected by the user. CC 2