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What is GTLP16T1655?

This electronic component, produced by the manufacturer "Fairchild Semiconductor", performs the same function as "16-Bit LVTTL/GTLP Universal Bus Transceiver".


GTLP16T1655 Datasheet PDF - Fairchild Semiconductor

Part Number GTLP16T1655
Description 16-Bit LVTTL/GTLP Universal Bus Transceiver
Manufacturers Fairchild Semiconductor 
Logo Fairchild Semiconductor Logo 


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August 1998
Revised April 2000
GTLP16T1655
16-Bit LVTTL/GTLP Universal Bus Transceiver
General Description
The GTLP16T1655 is a 16-bit universal bus transceiver
that provides LVTTL to GTLP signal level translation. It
allows for transparent, latched and clocked modes of data
transfer. The device provides a high speed interface
between cards operating at LVTTL logic levels and a back-
plane operating at GTLP logic levels. High speed back-
plane operation is a direct result of GTLP’s reduced output
swing (<1V), reduced input threshold levels and output
edge rate control. The edge rate control minimizes bus set-
tling time. GTLP is a Fairchild Semiconductor derivative of
the Gunning Transceiver Logic (GTL) JEDEC standard
JESD8-3.
Fairchild’s GTLP has internal edge-rate control and is pro-
cess, voltage, and temperature (PVT) compensated. Its
function is similar to BTL and GTL but with different output
levels and receiver threshold. GTLP output LOW level is
typically less than 0.5V, the output level HIGH is 1.5V and
the receiver threshold is 1.0V.
Features
s Bidirectional interface between GTLP and LVTTL logic
levels
s Variable Edge Rate Control pin to select desired edge
rate on the GTLP backplane (VERC)
s Partitioned as two 8-Bit transceivers with individual latch
timing and output control but with a common clock.
s Power up/down high impedance for live insertion.
s External pin to pre-condition I/O capacitance to high
state
s Bus-hold data inputs on the A-Port eliminates the need
for external pull-up resistors on unused inputs
s LVTTL compatible driver and control inputs
s Flow through pinout optimizes PCB layout
s Open drain on GTLP to support wired-or connection
s A Port source/sink 24 mA/+24 mA
s B Port sink +100mA
s D-type flip-flop, latch and transparent data paths
s 40°C to 85°C Temperature capability
s Available in TSSOP
Ordering Code:
Order Number Package Number
Package Description
GTLP16T1655MTD
MTD64
64-Lead Thin Shrink Small Outline Package, JEDEC MO-153, 6.1mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter Xto the ordering code.
© 2000 Fairchild Semiconductor Corporation DS500172
www.fairchildsemi.com

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GTLP16T1655 equivalent
DC Electrical Characteristics
Over Recommended Operating Free-Air Temperature Range, VREF = 1.0V (unless otherwise noted).
Symbol
Test Conditions
Min
Typ
(Note 7)
VIH B Port
Others
VREF +0.05
2.0
VIL B Port
Others
0.0
VREF
GTLP
0.74
1.0
VIK VCC = 3.0V
II = −18 mA
VOH
A Port
VCC = Min to Max (Note 8)
IOH = −100 µA
VCC 0.2
VCC = 3.0V
IOH = −12 mA
2.4
IOH = −24 mA
2.2
VOL
A Port
VCC = Min to Max (Note 8)
IOL = 100 µA
VCC = 3.0V
IOL = 12 mA
IOL = 24 mA
B Port
VCC = 3.0V
IOL = 40 mA
IOL = 80 mA
IOL = 100 mA
II
A Port
VCC = 3.6V
VI = VCC or 0V
Control Pins VCC = 3.6V
VI = VCC or 0V
B Port
VCC = 3.6V
VI = VTT or GND
IOFF
Except
VCC = 0
VI or VO = 0 to
VERC
VCC
II(hold)
A Port
VCC = 3.0V
VI = 0.8V
75
VI = 2.0V
75
VCC = 3.6V
VI = 0 to VCC
IOZH
A Port
VCC = 3.6V
VO = VCC
B Port
VO = 1.5V
IOZL
A Port
VCC = 3.6V
VO = 0V
B Port
VO = 0.4V
IOZPU
A Port
VCC = 0 to 1.5V
VO = 0.5 to 3V
(Note 9)
OE = 0 or VCC
IOZPD
A Port
VCC = 1.5 to 0V
VO = 0.5 to 3V
(Note 9)
OE = 0 or VCC
ICC A or B Ports VCC = 3.6
Outputs HIGH
(vcc)
IO = 0
Outputs LOW
VI = VCC or GND
Outputs Disabled
ICC
A Port and VCC = 3.6V
One Input at
0
(Note 10) Control Pins A or Control
VCC0.6
Inputs at VCC or GND
Ci Control Pins
VI = VCC or 0
5.8
A Port
VI = VCC or 0
8.0
B Port
VI = VCC or 0
8.3
Note 7: All typical values are at VCC = 3.3V, and TA = 25°C.
Note 8: For conditions shown as Min or Max, use the appropriate value specified under recommended operating conditions.
Note 9: This is specified by characterization but not tested.
Note 10: This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND.
Max
VTT
VREF 0.05
0.8
1.1
1.2
0.20
0.40
0.50
0.20
0.40
0.50
±10
±10
±10
100
±500
10
10
10
10
±50
±50
55
55
55
1
7.0
9.5
9.9
Units
V
V
V
V
V
V
V
V
V
µA
µA
µA
µA
µA
µA
µA
µA
µA
mA
mA
pF
5 www.fairchildsemi.com


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