TL16C550DIZQSR

Product Summary

The TL16C550DIZQSR is an asynchronous communications element with autoflow control. The device is functional upgrades of the TL16C550B asynchronous communications element (ACE), which in turn is a functional upgrade of the TL16C450. Functionally equivalent to the TL16C450 on power up (character or TL16C450 mode), the TL16C550DIZQSR, like the TL16C550B, can be placed in an alternate FIFO mode. This relieves the CPU of excessive software overhead by buffering received and transmitted characters. The receiver and transmitter FIFOs of the TL16C550DIZQSR store up to 16 bytes including three additional bits of error status per byte for the receiver FIFO. In the FIFO mode, there is a selectable autoflow control feature that can significantly reduce software overload and increase system efficiency by automatically controlling serial data flow using RTS output and CTS input signals.

Parametrics

TL16C550DIZQSR absolute maximum ratings: (1)Supply voltage range, VCC: –0.5 V to 7 V; (2)Input voltage range at any input, VI: –0.5 V to 7 V; (3)Output voltage range, VO:–0.5 V to 7 V; (4)Operating free-air temperature range, TA: 0 to 70℃; (5)Storage temperature range, Tstg : –65 to 150℃; (6)Case temperature for 10 seconds, TC: 260℃; (7)Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: 260℃.

Features

TL16C550DIZQSR features: (1)Programmable Auto-RTS and Auto-CTS; (2)In Auto-CTS Mode, CTS Controls Transmitter; (3)In Auto-RTS Mode, RCV FIFO Contents and Threshold Control RTS; (4)Serial and Modem Control Outputs Drive a RJ11 Cable Directly When Equipment Is on the Same Power Drop; (5)Capable of Running With All Existing TL16C450 Software; (6)After Reset, All Registers Are Identical to the TL16C450 Register Set; (7)Up to 24-MHz Clock Rate for up to 1.5-Mbaud Operation With VCC = 5 V; (8)Up to 20-MHz Clock Rate for up to 1.25-Mbaud Operation With VCC = 3.3 V; (9)Up to 16-MHz Clock Rate for up to 1-Mbaud Operation With VCC = 2.5 V.

Diagrams