TL16C552

Supply voltage range, V_DD (see Note 1)   . . . . . . . .0.5 V to V_DD + 0.3 V 
Input voltage range, V_I  . . . . . . . . . . . . .. . . . . . . . . . . . . . . 0.5 V to 7 V
Output voltage range, V_O  . . . . . . . . . . . . . . . . . . . 0.5 V to V_DD + 0.3 V
Continuous total power dissipation  . . . . . . . . . . . . . . . . . . . . . . 500 mW
Operating free-air temperature range, T_A . . . . . .  . . . . . . 10°C to 70°C
Storage temperature range, T_stg . . . . . . . . . . . . .. . . .  . 65°C to 150°C
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltage levels are with respect to ground (VSS).

The TL16C552 is an enhanced dual channel version of the popular TL16C550 asynchronous communications element (ACE). The device serves two serial input/output interfaces simultaneously in microcomputer or microprocessor-based systems. Each channel performs serial-to-parallel conversion on data characters received from peripheral devices or modems and parallel-to-serial conversion on data characters transmitted by the CPU. The complete status of each channel of the dual ACE can be read at any time during functional operation by the CPU. The information obtained includes the type and condition of the transfer operations being
performed and the error conditions.

In addition to its dual communications interface capabilities, the TL16C552 provides the user with a fully bidirectional parallel data port that fully supports the parallel Centronics-type printer. The parallel port and the two serial ports provide IBM PC/AT-compatible computers with a single device to serve the three system ports.

A programmable baud rate generator is included that can divide the timing reference clock input by a divisor between 1 and (2¹⁶ 1).

The TL16C552 is housed in a 68-pin plastic leaded chip carrier.