Datasheet
GTLP Chip Configurations
Live board insertion
Many backplane systems are used in
communication and networking applica-
tions where availability 24 hours a day,
seven days a week (24/7) is a must. As
a result, boards must be inserted or
removed from the system while it is still
running. TI has included three kinds of
internal circuitry to accomplish fault-
proof live insertion.
First, by including a blocking diode
and removing a clamping diode, unex-
pected device behavior is eliminated
when power is fully or partially removed.
Second, new circuitry avoids driver
conflict by ensuring that outputs are
disabled during power up or down. And
third, an internal pre-charging circuit
prevents data corruption which can
result from voltage spikes caused by
inserting a board into a live backplane.
GTLP Device
SN74GTLP817
SN74GTLPH306
SN74GTLPH16945
SN74GTLPH16912
SN74GTLPH32945
SN74GTLPH32912
SN74GTLP1394
SN74GTLPH1645
SN74GTLPH1655
SN74GTLPH1612
SN74GTLPH3245
LVTTL-to-GTLP Function
GTLP to LVTTL
1 to 6 Fanout Driver
8-Bit Bus Transceiver
16-Bit Bus Transceiver
18-Bit Universal Bus Transceiver
32-Bit Bus Transceiver
36-Bit Universal Bus Transceiver
2-Bit 3-Wire Transceiver
16-Bit Bus Transceiver
16-Bit Universal Bus Transceiver
18-Bit Universal Bus Transceiver
32- Bit Bus Transceiver
Pin
Count
24
24
48
56
96
114
16
56
64
64
114
SOIC
✔
✔
•
•
•
•
✔
•
•
•
•
SSOP
•
•
✔
✔
•
•
•
✔
•
•
•
TSSOP
✔
✔
✔
✔
•
•
✔
✔
✔
✔
•
TVSOP
✔
✔
✔
✔
•
•
✔
✔
•
•
•
LFBGA
•
•
•
•
✔
✔
•
•
•
•
✔
Medium Drive (50 mA)
High Drive (100 mA)
High - Data On Bus
Max peak with precharge
Point of life insertion
during high on bus
Possible peak
without precharge
Possible peak
without precharge
Volts
V
High
V V
Threshold precharge level=
time
TH
Point of life insertion
during low on bus
Max peak with precharge
Low - Data On Bus
For more information on the GTLP family of high-speed
parallel backplane logic or to find out how TI can help
you make the switch to GTLP logic, visit our web site at
www.ti.com/sc/gtlp or to reserve a copy of our GTLP
Product Information book visit www.ti.com/sc/gtlpbook.
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