Auto-powerdown Plus
Operate With 3-V to 5.5-V VCC Supply
Always-Active Noninverting Receiver
Output (ROUT1B)
Support Operation From 250 kbit/s to
1 Mbit/s
Low Standby Current . . . 1 μA Typ
External Capacitors . . . 4 × 0.1 μF
Accept 5-V Logic Input With 3.3-V Supply
Inter-Operable With SN65C3243,
SN75C3243
RS-232 Bus-Pin ESD Protection Exceeds
±15-kV Using Human-Body Model (HBM)
Applications
− Battery-Powered Systems, PDAs,
Notebooks, Sub-Notebooks, Laptops,
Palmtop PCs, Hand-Held Equipment,
Modems, and Printers

description/ordering information
The ’C3238 devices consist of five line drivers, three line receivers, and a dual charge-pump circuit with ±15-kV
ESD protection pin to pin (serial-port connection pins, including GND). The charge pump and four small external
capacitors allow operation from a single 3-V to 5.5-V supply. In addition, these devices include an always-active
noninverting output (ROUT1B), which allows applications using the ring indicator to transmit data while the
device is powered down. These devices operate at data signaling rates up to 1 Mbit/s and at an increased
slew-rate range of 24 V/μs to 150 V/μs.