DAN-124 Datasheet, PDF (2/3 Pages) Exar Corporation – EXAR’S XR88C92/192 COMPARED

DATA COMMUNICATIONS APPLICATION NOTE
DAN124
1.4 SUMMARY OF DIFFERENCES
In the table below, some differences between the XR88C92/192 and SC26C92 are summarized.
TABLE 1: DIFFERENCES BETWEEN EXAR’S XR88C92/192 WITH PHILIPS’S SC26C92
DIFFERENCES
Data Bus Standard
Power Supply Operation
Max Operating Current
Max Frequency on XTAL1
Max Data Rate
Operating Temperature Range
Package
44-(T)QFP package thickness
44-(T)QFP package max lead lengths
TX FIFO Size
RX FIFO Size
TX FIFO Trigger Levels
RX FIFO Trigger Levels
XR88C92/192
Intel
3.3 and 5 V
3 mA @ 3.3 V
6 mA @ 5 V
24 MHz
1 Mbps
Commercial and Industrial
44-TQFP, 44-PLCC,
40-PDIP
1.4 mm
0.75 mm
8 (XR88C92)
16 (XR88C192)
8 (XR88C92)
16 (XR88C192)
8, 4, 6, 1 (XR88C92)
16, 8, 12, 1(XR88C192)
1, 3, 6, 8 (XR88C92)
1, 6, 12, 16 (XR88C192)
SC26C92
Intel
5 V only
10 mA @ 5 V
8 MHz
1 Mbps
Commercial and Industrial
44-PQFP, 44- PLCC,
40-PDIP
1.75 mm
0.95 mm
8
8
8, 4, 6, 1
1, 3, 6, 8
1.5 REPLACING THE SC26C92 WITH THE XR88C92/192
You can directly replace the Philips SC26C92 with Exar’s XR88C92/192 without any hardware changes if us-
ing either the 44-TQFP, 44-PLCC or 40-PDIP packages since they are all pin-to-pin compatible.
Since the XR88C192 has a larger Transmit and Receive FIFO, the software will need to be updated to take ad-
vantage of the features of the XR88C192. The XR88C92/192 allows the hardware designer to choose either a
5 or 3.3 V power supply instead of being forced to use a 5 V power supply only. Also, the XR88C92/192 has a
lower power consumption than the SC26C92.
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