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PDF LTC1045CJ Data sheet ( Hoja de datos )
| Número de pieza | LTC1045CJ | |
| Descripción | Programmable Micropower Hex Translator/ Receiver/Driver | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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LTC1045
Programmable
Micropower Hex Translator/
Receiver/Driver
FEATURES
s Efficiently Translate Voltage Levels
s Internal Hysteresis for Noise Immunity
s Output Latches Included
s Three-State Outputs
s Programmable Power/Speed
s Power Can Be Completely Shut Off
s ±50V on Inputs with External 100k Limit Resistor
s 1.2µs Response at 100µA Supply Current
U
APPLICATIONS
s TTL/CMOS to ±5V Analog Switch Drive
s TTL to CMOS (3V to 15V VCC)
s ECL to CMOS (3V to 15V VCC)
s Ground Isolation Buffer
s Low Power RS232 Line Receiver
DESCRIPTION
The LTC®1045 is a hex level translator manufactured using
Linear Technology’s enhanced LTCMOSTM silicon gate
process. It consists of six high speed comparators with
output latches and three-state capability. Each compara-
tor’s plus input is brought out separately. The minus inputs
of comparators 1 to 4 are tied to VTRIP1 while 5 and 6 are
tied to VTRIP2.
The ISET pin has several functions. When taken to V + the
outputs are latched and power is completely shut off.
Power/speed can be programmed by connecting ISET to V –
through an external resistor.
, LTC and LT are registered trademarks of Linear Technology Corporation.
LTCMOS is a trademark of Linear Technology Corporation.
TYPICAL APPLICATION
5V
TTL IN
1.4V
XMT IN
20
V+
+
1
VOH
VOL
XMT OUT
DIS
– ISET 13
V– 12
10
11
Flat Ribbon Cable Driver/Receiver
5V
66-FT FLAT RIBBON CABLE
ZO = 150Ω
ADJACENT CONDUCTORS
RCV IN
150Ω
0.5V
20
V+
+
1
VOH
VOL
RCV OUT
DIS
– ISET 13
V– 12
10
11
TTL OUT
1045 TA01
XMT IN (5V/DIV)
XMT OUT (1V/DIV)
RCV IN (1V/DIV)
RCV OUT (5V/DIV)
100ns/DIV
045 TA01a
1
1 page  
BLOCK DIAGRAM
V+
20
V+
VOH
1
VOH
IN1 2
+
–
VBIAS
V–
LEVEL
SHIFT
LATCH
DIS
LE
VOL
IN2 3
IN3 4
IN4 5
IN5 6
IN6 7
VTRIP1 9
V+
+
–
VBIAS
V–
V+
+
–
VBIAS
V–
V+
+
–
VBIAS
V–
V+
+
–
VBIAS
V–
V+
+
–
VBIAS
V–
8
VTRIP2
VOH
DIS
LE
VOL
VOH
DIS
LE
VOL
VOH
DIS
LE
VOL
VOH
DIS
LE
VOL
VOH
DIS
LE
VOL
VBIAS
BIAS
GENERATOR
VREF ≈ 1.6V
∼8k
SHUTDOWN
LATCH
ENABLE
10
V–
RSET
12
ISET
LTC1045
19 OUT1
18 OUT2
17 OUT3
16 OUT4
15 OUT5
14 OUT6
13 DISABLE
11
VOL
1045 BD
5
5 Page 
TYPICAL APPLICATIONS
LTC1045
±5V Analog Switch Driver
5V
TTL OR
CMOS LOGIC
INPUTS
1 VOH
2 IN1
LTC1045
+
–
3 IN2
+
–
4 IN3
+
–
5 IN4
+
–
6 IN5
+
–
7 IN6
+
–
8 VTRIP2
V+ 20
OUT1 19
OUT2 18
OUT3 17
OUT4 16
OUT5 15
OUT6 14
13
DIS
1
13
3
5
8
6
10
12
7
– 5V
9 VTRIP1
10 V–
12
ISET
~1.5V
11
VOL
100k
– 5V
CD4016
SW A
SW B
SW C
SW D
5V
14
2
±5V
4
±5V
9 ±5V
11 ±5V
1045 TA09
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet LTC1045CJ.PDF ] | |
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