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Linear Technology Electronic Components Datasheet

LT1015 Datasheet

High Speed Dual Line Receiver

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LT1015 pdf
FEATURES
s Response Time: 10ns
s Setup Time for Latch: 2ns
s Operates on Single 5V Supply
s Dual Function in 8-Pin Package
s No Input Slew Rate Requirement
s Latch Function Included on Chip
s True Differential Inputs
U
APPLICATIONS
s High Speed Differential Line Receiver
s Pulse Height/Width Discriminator
s Timing and Delay Generators
s Analog to Digital Interface
TYPICAL APPLICATION
LT1015
High Speed
Dual Line Receiver
DESCRIPTION
The LT ®1015 is a dual high speed comparator intended for
line receiver and other general purpose fast comparator
functions. It has 10ns response time, true differential
inputs, TTL outputs and operates from a single 5V supply.
A unique output stage design virtually eliminates power
supply glitching during transitions. This greatly reduces
instability and crosstalk problems in multiple line applica-
tions. No minimum input slew rate is required as in
previous TTL output comparators.
The LT1015 has a true Latch pin for retaining output data.
Setup time is 2ns, allowing the comparators to capture
data much faster than the actual flowthrough response
time. 8-pin miniDIP and ceramic packages allow high
packing density.
, LTC and LT are registered trademarks of Linear Technology Corporation.
BLOCK DIAGRAM
2-Channel 20MHz Clocked Line Receiver
INPUT A
INPUT B
+
1/2
LT1015
+
1/2
LT1015
5V
CHANNEL A
CLOCK
DATA LATCHED
ON POSITIVE EDGE
CHANNEL B
1015 • TA01
INPUT A
REFERENCE
INPUT
INPUT B
V+
+
1/2
LT1015
1/2
+LT1015
OUTPUT A
LATCH (BOTH SIDES)
DEVICE ACTIVE WITH
LATCH LOW. “OPEN”
GOES TO HIGH STATE
OUTPUT B
1015 • BD
1


Linear Technology Electronic Components Datasheet

LT1015 Datasheet

High Speed Dual Line Receiver

No Preview Available !

LT1015 pdf
LT1015
ABSOLUTE MAXIMUM RATINGS
Supply Voltage .......................................................... 7V
Differential Input Voltage ........................................... 5V
Input Voltage
Positive................................................ Supply + 0.5V
Negative .............................................................. – 1V
Input Current (Forced) Positive ............................ 20mA
Latch Pin Voltage........................................ Supply + 1V
Output Current (Continuous) .............................. ±20mA
Operating Temperature Range
LT1015C .................................................. 0°C to 70°C
LT1015M ........................................ – 55°C to 125°C*
Storage Temperature ............................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
*Air flow must be provided for TA > 100°C
PACKAGE/ORDER INFORMATION
INPUT A 1
REFERENCE 2
INPUT B 3
LATCH 4
TOP VIEW
8 V+
7 OUTPUT A
6 GND
5 OUTPUT B
J8 PACKAGE
8-LEAD CERDIP
N8 PACKAGE
8-LEAD PDIP
TJMAX = 150°C, θJA = 100°C/ W (J8)
TJMAX = 100°C, θJA = 130°C/ W (N8)
ORDER PART
NUMBER
LT1015CJ8
LT1015CN8
LT1015MJ8
Consult factory for Industrial grade parts.
ELECTRICAL CHARACTERISTICS
V+ = 4.6V to 5.4V, VLATCH = 0V, common mode input voltage = 2.5V, TJ = 25°C, unless otherwise noted.
PARAMETER
CONDITIONS
Input Offset Voltage (Note 1)
VCM = 1.25V to (V + – 1.5V)
Input Bias Current
VIN = 0V (Note 2)
Reference Input Current
VIN = 0V (Note 2)
Voltage Gain (Note 3)
VOUT = 0.5V to 2.5V, Load = 1 TTL Gate
Common Mode Input Range (Note 5) Minimum Input
Maximum Input
Output High Voltage
Output Low Voltage
Supply Current
IOUT = 4mA
ISINK = 4mA
V + = 5V
Latch Pin High Input Voltage
Device Latched
Latch Pin Low Input Voltage
Device Active
Latch Pin Current
Propagation Delay
Latch Setup Time
VIN 20mV (Note 4)
0°C TJ 100°C
– 55°C TJ 150°C
MIN
q
q
q
q 1000
q
q V + – 1.5
q 2.5
q
q
q
q 0.8
q
q7
q7
TYP
1
15
30
2500
1.0
V + – 1.0
0.3
55
10
10
2
MAX UNITS
20 mV
30 µA
60 µA
V/V
1.25 V
V
V
0.5 V
70 mA
2V
V
1 mA
14 ns
16 ns
ns
The q denotes specifications which apply over the full operating
temperature range.
Note 1: Input offset voltage is the maximum required to drive the output to
a low state of 0.5V and high state of 2.5V.
Note 2: Input currents are measured by applying a large positive
differential input voltage. The resulting input current is divided by two to
obtain input current at VIN = 0V.
Note 3: Voltage gain is guaranteed by design, but not tested.
Note 4: Propagation delay is sample tested in production with a large
overdrive. The limit is guard banded to account for the slight increase
(500ps) at 20mV overdrive.
Note 5: Common mode input range is the voltage range over which the
differential input offset voltage is less than 20mV. If both inputs remain
inside this common mode range, propagation delay will be unaffected. It
will also be normal if the signal input is below the 1.25V lower limit when
the input transition begins. An increase in propagation delay of up to 10ns
may occur if the signal input is above the upper common mode limit when
the transition begins. Sine wave inputs may not be affected when the peak
exceeds the common mode range if the signal is inside the common mode
range for 10ns before threshold is reached.
2


Part Number LT1015
Description High Speed Dual Line Receiver
Maker Linear Technology
Total Page 4 Pages
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