LT1015 [Linear]
High Speed Dual Line Receiver; 高速双线路接收器
| 型号： | LT1015 |
| 厂家： | 
Linear |
| 描述： | High Speed Dual Line Receiver |
| 文件： | 总4页 (文件大小：168K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LT1015
High Speed
Dual Line Receiver
U
FEATURES
DESCRIPTION
TheLT®1015isadualhighspeedcomparatorintendedfor
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.
■
Response Time: 10ns
■
Setup Time for Latch: 2ns
■
Operates on Single 5V Supply
■
Dual Function in 8-Pin Package
■
No Input Slew Rate Requirement
Latch Function Included on Chip
■
■
True Differential UInputs
APPLICATIONS
■
High Speed Differential Line Receiver
Pulse Height/Width Discriminator
Timing and Delay Generators
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.
■
■
■
Analog to Digital Interface
, LTC and LT are registered trademarks of Linear Technology Corporation.
W
U
BLOCK DIAGRAM
TYPICAL APPLICATION
2-Channel 20MHz Clocked Line Receiver
+
V
5V
INPUT A
+
INPUT A
+
1/2
1/2
CHANNEL A
OUTPUT A
LT1015
LT1015
–
–
LATCH (BOTH SIDES)
REFERENCE
INPUT
DEVICE ACTIVE WITH
LATCH LOW. “OPEN”
GOES TO HIGH STATE
CLOCK
DATA LATCHED
–
INPUT B
+
ON POSITIVE EDGE
1/2
1/2
LT1015
CHANNEL B
OUTPUT B
LT1015
–
+
INPUT B
1015 • TA01
1015 • BD
1
LT1015
W W U W
U
W U
ABSOLUTE MAXIMUM RATINGS
PACKAGE/ORDER INFORMATION
Supply Voltage .......................................................... 7V
Differential Input Voltage ........................................... 5V
Input Voltage
ORDER PART
NUMBER
TOP VIEW
+
INPUT A
REFERENCE
INPUT B
1
2
3
4
V
8
7
6
5
OUTPUT A
GND
LT1015CJ8
LT1015CN8
LT1015MJ8
Positive................................................ Supply + 0.5V
Negative .............................................................. –1V
Input Current (Forced) Positive ............................ 20mA
Latch Pin Voltage........................................ Supply + 1V
Output Current (Continuous) .............................. ±20mA
Operating Temperature Range
LATCH
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)
LT1015C.................................................. 0°C to 70°C
LT1015M ........................................ –55°C to 125°C*
Storage Temperature ............................ –65°C to 150°C
Consult factory for Industrial grade parts.
Lead Temperature (Soldering, 10 sec).................. 300°C
*Air flow must be provided for TA > 100°C
ELECTRICAL CHARACTERISTICS
V+ = 4.6V to 5.4V, VLATCH = 0V, common mode input voltage = 2.5V, TJ = 25°C, unless otherwise noted.
PARAMETER
Input Offset Voltage (Note 1)
Input Bias Current
Reference Input Current
Voltage Gain (Note 3)
CONDITIONS
= 1.25V to (V – 1.5V)
MIN
TYP
1
15
30
2500
MAX
20
30
UNITS
+
V
CM
●
●
●
●
mV
µA
µA
∆V = 0V (Note 2)
IN
∆V = 0V (Note 2)
60
IN
V
OUT
= 0.5V to 2.5V, Load = 1 TTL Gate
1000
V/V
Common Mode Input Range (Note 5) Minimum Input
Maximum Input
●
●
1.0
V – 1.0
1.25
V
V
+
+
V – 1.5
Output High Voltage
Output Low Voltage
Supply Current
Latch Pin High Input Voltage
Latch Pin Low Input Voltage
Latch Pin Current
I
I
= 4mA
= 4mA
●
●
2.5
V
V
mA
V
V
mA
OUT
0.3
55
0.5
70
2
SINK
+
V = 5V
Device Latched
Device Active
●
●
●
●
0.8
1
Propagation Delay
∆V ≥ 20mV (Note 4)
IN
0°C ≤ T ≤ 100°C
●
●
7
7
10
10
14
16
ns
ns
J
–55°C ≤ T ≤ 150°C
J
Latch Setup Time
2
ns
The
●
denotes specifications which apply over the full operating
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
temperature range.
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.
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 ∆V = 0V.
IN
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.
2
LT1015
W
U
TYPICAL PERFORMANCE CHARACTERISTICS
Propagation Delay vs Overdrive
Propagation Delay vs Temperature
Latch Set-Up Time
30
25
20
15
10
5
6
4
25
20
15
10
5
T = 25°C
J
STEP SIZE = 100mV
OVERDRIVE = 5mV
OUTPUT LOAD CAPACITANCE = 10pF
V
S
= 5V
2
0
STEP SIZE = 100mV
FALLING OUTPUT t
PDHL
–2
–4
–6
RISING OUTPUT t
PDHL
0
0
50
100 125
–50 –25
0
25
75
50
100 125
–50 –25
0
25
75
0
10
20
30
40
50
JUNCTION TEMPERATURE (°C)
JUNCTION TEMPERATURE (°C)
OVERDIRVE (mV)
LT1015 • TPC02
LT1015 • TPC03
LT1015 • TPC01
Output Low Voltage (VOL
)
Output High Voltage (VOH
)
Common Mode Limits
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
6
5
4
3
2
1
0
V
= 5V
V
= 5V, V = 30mV
V = 5V
S
S
S
IN
UPPER LIMIT*
T = 125°C
J
T = –55°C
J
T = 25°C
J
T = 25°C
J
T = –55°C
J
T = 125°C
J
V
S
= SINGLE 5V SUPPLY
LOWER LIMIT
50
100 125
0
2
4
6
8
10 12 14 16 18 20
–50 –25
0
25
75
0
2
4
6
8
10 12 14 16 18 20
OUTPUT SINK CURRENT (mA)
OUTPUT SINK CURRENT (mA)
JUNCTION TEMPERATURE (°C)
LT1015 • TPC04
LT1015 • TPC06
LT1015 • TPC05
*
UPPER LIMIT TRACKS 5V SUPPLY. 4.1V LIMIT
AT 2°5C WILL DROP TO 3.8V WHEN V = 4.7V
S
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.
3
LT1015
PACKAGE DESCRIPTION
U
Dimensions in inches (millimeters) unless otherwise noted.
J8 Package
8-Lead CERDIP (Narrow 0.300, Hermetic)
(LTC DWG # 05-08-1110)
CORNER LEADS OPTION
(4 PLCS)
0.023 – 0.045
(0.584 – 1.143)
HALF LEAD
0.200
OPTION
(5.080)
0.300 BSC
(0.762 BSC)
0.045 – 0.068
MAX
(1.143 – 1.727)
FULL LEAD
OPTION
0.405
(10.287)
0.015 – 0.060
(0.381 – 1.524)
0.005
(0.127)
MIN
MAX
6
5
4
8
7
0.008 – 0.018
(0.203 – 0.457)
0° – 15°
0.025
(0.635)
RAD TYP
0.220 – 0.310
(5.588 – 7.874)
0.045 – 0.068
(1.143 – 1.727)
0.385 ± 0.025
(9.779 ± 0.635)
0.125
3.175
MIN
0.100 ± 0.010
(2.540 ± 0.254)
0.014 – 0.026
(0.360 – 0.660)
1
2
3
J8 0694
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS.
N8 Package
8-Lead PDIP (Narrow 0.300)
(LTC DWG # 05-08-1510)
0.130 ± 0.005
(3.302 ± 0.127)
0.300 – 0.325
(7.620 – 8.255)
0.045 – 0.065
(1.143 – 1.651)
0.400*
(10.160)
MAX
8
1
7
6
5
4
0.065
(1.651)
TYP
0.009 – 0.015
(0.229 – 0.381)
0.255 ± 0.015*
(6.477 ± 0.381)
0.125
(3.175)
MIN
0.005
0.015
(0.380)
MIN
(0.127)
MIN
+0.025
–0.015
0.325
+0.635
8.255
2
3
(
)
–0.381
0.100 ± 0.010
(2.540 ± 0.254)
0.018 ± 0.003
(0.457 ± 0.076)
N8 0695
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1016
Ultrafast Precision Comparator
12ns, Single-Supply Ground Sensing Comparator
50Mbits/s Precision Quad Line Driver
10ms Propagation Delay, Complimentary TTL Outputs
Inputs Can Exceed Positive Supply Up to 15V
LT1116
LTC®1520
18ns Propagation Delay Over Temperature Rail-to-Rail Inputs
LT/GP 1195 1K REV A • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1995
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
4
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●
(408) 432-1900 FAX: (408) 434-0507 TELEX: 499-3977
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