ST3222EB| Datasheet

ST3222EB, ST3222EBPR, ST3222EBTR, ST3222EC, ST3222ECPR, ST3222ECTR

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ST3222EB ST3222EC
15 kV ESD protected, 3 to 5.5 V low power, up to 250 Kbps, RS-232 drivers and receivers
Features

ESD protection for RS-232 I/O pins 15 kV human body model, 8 kV IEC 1000-4-2 contact discharge 300 uA supply current 250KBps minimum guarantee data rate 6 V/us minimum guarantee slew rate Meet EIA/TIA-232 specification down to 3 V Available in SSOP20 and TSSOP20
TSSOP SSOP

Description
The ST3222E is a 3 V powered EIA/TIA-232 and V.28/V.24 communications interface with low power requirements, high data-rate capabilities and enhanced electrostatic discharge (ESD) protection to 8 kV using IEC1000-4-2 Contact Discharge and 15 kV using the Human Body Model. ST3222E has a proprietary low dropout transmitter output stage providing true RS-232 performance from 3 to 5 V supplies with a dual charge pump. The charge pump requires only four small 0.1 mF external capacitors for operation form 3 V supply. The device has two receivers and two drivers. The ST3222E features a 1 mA shutdown mode that reduces power consumption and extends battery life in portable systems. Its receivers can remain active in shutdown mode, allowing external devices such as modems to be monitored using only 1 mA supply current. The device is guaranteed to run at data rates of 250 Kbps while maintaining RS-232 output levels. Table 1. Device summary
Temperature range 0 to 70 C -40 to 85 C 0 to 70 C -40 to 85 C Package

Typical applications are Notebook, Sub-notebook and Palmtop Computers, Battery Powered Equipment, Hand-Held Equipment, Peripherals and Printers.

Order codes ST3222ECPR ST3222EBPR ST3222ECTR ST3222EBTR January 2008

Packaging 1350 parts per reel 1350 parts per reel 2500 parts per reel 2500 parts per reel 1/15
www.st.com 15

SSOP20 (tape and reel) SSOP20 (tape and reel) TSSOP20 (tape and reel) TSSOP20 (tape and reel) Rev 8