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GTLP2T152MX

P1-P3P4-P6P7-P7
© 2002 Fairchild Semiconductor Corporation DS500486 www.fairchildsemi.com
June 2001
Revised February 2002
GTLP2T152 2-Bit LVTTL/GTLP Transceiver
GTLP2T152
2-Bit LVTTL/GTLP Transceiver
General Description
The GTLP2T152 is a 2-bit transceiver that provides LVTTL-
to-GTLP signal level translation. Data directional control is
handled with a transmit/receive pin. High-speed backplane
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-settling time.
GTLP is a Fairchild Semiconductor derivative of the Gun-
ning Transistor logic (GTL) JEDEC standard JESD8-3.
Fairchild’s GTLP has internal edge-rate control and is pro-
cess, voltage and temperature compensated. GTLP’s I/O
structure is similar to GTL and BTL but offers different out-
put levels and receiver threshold. Typical GTLP output volt-
age levels are: V
OL
= 0.5V, V
OH
= 1.5V, and V
REF
= 1V.
Features
■ Bidirectional interface between GTLP and LVTTL logic
levels
■ Designed with edge rate control circuitry to reduce out-
put noise on the GTLP port
■ V
REF
pin provides external supply reference voltage for
receiver threshold adjustibility
■ Special PVT compensation circuitry to provide consis-
tent performance over variations of process, supply volt-
age and temperature
■ TTL compatible driver and control inputs
■ Designed using Fairchild advanced BiCMOS technology
■ Bushold data inputs on A port to eliminate the need for
external pull-up resistors for unused inputs
■ Power up/down and power off high impedance for live
insertion
■ Open drain on GTLP to support wired-or connection
■ Flow through pinout optimizes PCB layout
■ A Port source/sink
−24mA/+24mA
■ B Port sink
+50mA
Ordering Code:
Pin Descriptions Connection Diagrams
US8
SOIC
Order Number Package Number Package Description
GTLP2T152M M08A 8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
[TUBE]
GTLP2T152MX M08A 8-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow
[TAPE and REEL]
GTLP2T152K8X MAB08A
(Preliminary)
8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide
[TAPE and REEL]
Pin Names Description
T/R
LVTTL Direction Control
(Receive Direction is Active LOW)
V
CC
, GND, V
REF
Device Supplies
A
n
A Port LVTTL Input/Output
B
n
B Port GTLP Input/Output
www.fairchildsemi.com 2
GTLP2T152
Functional Description
The GTLP2T152 is a 2-bit transceiver that supports GTLP and LVTTL signal levels. Data polarity is non-inverting and the
the GTLP/LVTTL outputs are controlled by the T/R
pin.
Functional Table
Logic Diagram
Inputs
Outputs Description
T/R
HBus A
n
Data to Bus B
n
B
n
Output Data Enabled
LBus B
n
Data to Bus A
n
A
n
Output Data Enabled
3 www.fairchildsemi.com
GTLP2T152
Absolute Maximum Ratings(Note 1) Recommended Operating
Conditions
Note 1: Absolute Maximum Ratings are those values beyond which the
safety of the device cannot be guaranteed. The device should not be oper-
ated at these limits. The parametric values defined in the “Electrical Char-
acteristics” table are not guaranteed at the absolute maximum rating. The
“Recommended Operating Conditions” table will define the conditions for
actual device operation.
Note 2: I
O
Absolute Maximum Rating must be observed.
DC Electrical Characteristics
Over Recommended Operating Free-Air Temperature Range, V
REF
= 1.0V (unless otherwise noted).
Supply Voltage (V
CC
) −0.5V to +4.6V
DC Input Voltage (V
I
) −0.5V to +4.6V
DC Output Voltage (V
O
)
Outputs 3-STATE
−0.5V to +4.6V
Outputs Active (Note 2)
−0.5V to +4.6V
DC Output Sink Current into
A Port I
OL
48 mA
DC Output Source Current from
A Port I
OH
−48 mA
DC Output Sink Current into
B Port in the LOW State, I
OL
100 mA
DC Input Diode Current (I
IK
)
V
I
< 0V −50 mA
DC Output Diode Current (I
OK
)
V
O
< 0V −50 mA
ESD Rating
>2000V
Storage Temperature (T
STG
) −65°C to +150°C
Supply Voltage V
CC
3.15V to 3.45V
Bus Termination Voltage (V
TT
)
GTLP 1.47V to 1.53V
V
REF
0.98V to 1.02V
Input Voltage (V
I
)
on A Port and Control Pins 0.0V to V
CC
HIGH Level Output Current (I
OH
)
A Port
−24 mA
LOW Level Output Current (I
OL
)
A Port
+24 mA
B Port
+50 mA
Operating Temperature (T
A
) −40°C to +85°C
Symbol Test Conditions
Min Typ Max
Units
(Note 3)
V
IH
B Port V
REF
+ 0.05 V
TT
V
Others 2.0
V
IL
B Port 0.0 V
REF
− 0.05
V
Others 0.8
V
REF
B Port 0.7V 1.0 1.3V V
V
TT
B Port V
REF
+ 50 mV 1.5 V
CC
V
V
IK
V
CC
= 3.15V I
I
= −18 mA −1.2 V
V
OH
A Port V
CC
= Min to Max (Note 4) I
OH
= −100 µAV
CC
- 0.2
VV
CC
= 3.15V I
OH
= −8 mA 2.4
I
OH
= -24 mA 2.2
V
OL
A Port V
CC
= Min to Max (Note 4) I
OL
= 100 µA0.2
VV
CC
= 3.15V I
OL
= 8 mA 0.4
V
CC
= 3.15V I
OL
= 24 mA 0.5
B Port V
CC
= 3.15V I
OL
= 40 mA 0.4
V
I
OL
= 50 mA 0.55
I
I
Control Pins V
CC
= 3.45V V
I
= 3.45V 5
µA
V
I
= 0V −5
A Port V
CC
= 3.45V V
I
= 3.45V 10
µA
V
I
= 0V −10
B Port V
CC
= 3.45V V
I
= 3.45V 5
µA
V
I
= 0 −5
I
OFF
A Port, V
CC
= 0V
I
or V
O
= 0 to 3.45V 30 µA
Control Pins
B Port V
CC
= 0V
I
or V
O
= 0 to 3.45V 30 µA
I
I (HOLD)
A Port V
CC
= 3.15V V
I
= 0.8V 75
µA
V
I
= 2.0V −75
I
OZH
A Port V
CC
= 3.45V V
O
= 3.45V 10
µA
B Port V
O
= 3.45V 5
P1-P3P4-P6P7-P7

GTLP2T152MX

Mfr. #:
Buy GTLP2T152MX
Manufacturer:
ON Semiconductor / Fairchild
Description:
Bus Transceivers 2-Bit Transceiver LVTTL/GTLP
Lifecycle:
New from this manufacturer.
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