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LTC1045CSW#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
1
LTC1045
1045fc
APPLICATIO S
U
FEATURES
DESCRIPTIO
U
TYPICAL APPLICATIO
U
Programmable
Micropower Hex Translator/
Receiver/Driver
100ns/DIV 045 TA01a
■
TTL/CMOS to ±5V Analog Switch Drive
■
TTL to CMOS (3V to 15V V
CC
)
■
ECL to CMOS (3V to 15V V
CC
)
■
Ground Isolation Buffer
■
Low Power RS232 Line Receiver
Flat Ribbon Cable Driver/Receiver
–
+
20
5V
11
1
TTL IN
1.4V
0.5V
XMT IN
XMT OUT 66-FT FLAT RIBBON CABLE
ADJACENT CONDUCTORS
Z
O
= 150Ω
150Ω
13
12
10
V
+
V
–
I
SET
DIS
V
OL
V
OH
RCV IN
1
RCV OUT
TTL OUT
1045 TA01
–
+
20
5V
11
13
12
10
V
+
V
–
I
SET
DIS
V
OL
V
OH
XMT IN (5V/DIV)
XMT OUT (1V/DIV)
RCV IN (1V/DIV)
RCV OUT (5V/DIV)
■
Efficiently Translate Voltage Levels
■
Internal Hysteresis for Noise Immunity
■
Output Latches Included
■
Three-State Outputs
■
Programmable Power/Speed
■
Power Can Be Completely Shut Off
■
±50V on Inputs with External 100k Limit Resistor
■
1.2µs Response at 100µA Supply Current
The LTC
®
1045 is a hex level translator manufactured using
Linear Technology’s enhanced LTCMOS
TM
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 V
TRIP1
while 5 and 6 are
tied to V
TRIP2
.
The I
SET
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 I
SET
to V
–
through an external resistor.
, LTC and LT are registered trademarks of Linear Technology Corporation.
LTCMOS is a trademark of Linear Technology Corporation.
2
LTC1045
1045fc
ORDER PART
NUMBER
Total Supply Voltage (V
+
, V
OH
to V
–
, V
OL
) .............. 18V
Output High Voltage (V
OH
)...................................... ≤ V
+
Input Voltage ....................................18V to (V
–
– 0.3V)
Output Short-Circuit Duration
(V
OH
– V
OL
≤ 10V) ................................... Continuous
ESD (MIL-STD-883, Method 3015) .................... 2000V
Operating Temperature Range ................. –40°C to 85°C
Storage Temperature Range ................. –55°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
(Notes 1, 2)
ABSOLUTE MAXIMUM RATINGS
W
WW
U
PACKAGE/ORDER INFORMATION
W
U
U
LTC1045CN
LTC1045CSW
T
JMAX
= 110°C, θ
JA
= 90°C/W (N)
T
JMAX
= 110°C, θ
JA
= 90°C/ W (SW)
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
I
B
Input Bias Current V
–
≤ V
IN
≤ V
+
±1nA
● 0.5 µA
Trip Voltage Range (Pins 8, 9) ● V
–
V
+
– 2 V
I
S
V
+
to V
–
Supply Current DISABLE = V
+
, R
SET
= 10k 2.5 3.5 mA
● 4.5 mA
I
OFF
V
+
to V
–
Supply Current in Shutdown DISABLE = I
SET
= V
+
10 nA
● 1 µA
V
REF
Voltage on I
SET
(Pin 12) R
SET
= 10k 0.9 V
● 0.6 1.25 V
V
OH
TTL Output High Voltage I
OUT
= –360µA, V
+
= 4.5V ● 2.4 4.4 V
V
OL
TTL Output Low Voltage I
OUT
= 1.6mA, V
+
= 4.5V ● 0.2 0.4 V
I
SINK
Output Short-Circuit Sink Current V
IN
= V
TRIP
– 100mV, V
OUT
= V
+
7.5 15 mA
● 5.5 mA
I
SOURCE
Output Short-Circuit Source Current V
IN
= V
TRIP
+ 100mV, V
OUT
= V
–
4.0 8.0 mA
● 3.2 mA
I
OZ
Three-State Leakage Current DISABLE = V
+
, V
OL
≤ V
OUT
≤ V
OH
0.005 µA
● 1 µA
R
OH
Output Resistance to V
OH
I
OUT
≤ 100µA 260 475 Ω
● 600 Ω
R
OL
Output Resistance to V
OL
I
OUT
≤ 100µA 100 180 Ω
● 250 Ω
I
SET
Voltage for Shutdown ● V
+
– 0.5 V
DISABLE Input Logic Levels
V
IH
V
+
= 4.5V, V
–
= 0V ● 2.0 V
V
IL
V
+
= 5.5V, V
–
= 0V ● 0.8 V
Input Supply Differential ● 4.5 15 V
(V
+
– V
–
) (Note 3)
Output Supply Differential ● 315V
(V
OH
– V
OL
) (Note 3)
1
2
3
4
5
6
7
8
9
10
TOP VIEW
N PACKAGE
20-LEAD PDIP
SW PACKAGE
20-LEAD SO WIDE
20
19
18
17
16
15
14
13
12
11
V
OH
IN1
IN2
IN3
IN4
IN5
IN6
V
TRIP2
V
TRIP1
V
–
V
+
OUT1
OUT2
OUT3
OUT4
OUT5
OUT6
DISABLE
I
SET
V
OL
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
+
= V
OH
= 5V, V
–
= V
OL
= 0Vunless otherwise specified. (Note 3) .
Consult LTC Marketing for parts specified with wider operating temperature ranges.
LTC1045CJ
J PACKAGE
20-LEAD CERDIP
T
JMAX
= 150°C, θ
JA
= 70°C/ W (J)
OBSOLETE PACKAGE
Consider N Package for Alternate Source
3
LTC1045
1045fc
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The maximum differential voltage between any two power pins
(V
+
, V
–
, V
OH
and V
OL
) must not exceed 18V. The maximum recommended
operating differential is 15V.
Note 3: During operation near the maximum supply voltage limit, care
should be taken to avoid or suppress power supply turn-on and turn-off
transients, power supply ripple or ground noise; any of these conditions
must not cause a supply differential to exceed the absolute maximum
rating.
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
I
+
vs Temperature
Delay Time vs R
SET
R
SET
(Ω)
5
4
3
2
1
0
100 10k 100k 1M
1045 G02
1k
V
+
TO V
–
CURRENT (mA)
T
A
= 25°C
V
+
= V
OH
= 5V
V
–
= V
OL
= 0V
I
+
vs R
SET
R
SET
(Ω)
DELAY TIME (µs)
1.2
1.0
0.8
0.6
0.4
0.2
0
100 10k 100k 1M
1045 G03
1k
T
A
= 25°C
V
+
= V
OH
= 5V
V
–
= V
OL
= 0V
V
IN
= V
TRIP
±100mV
V
REF
vs Temperature
TEMPERATURE (°C)
–50
VOLTAGE ON I
SET
PIN (V)
2.5
2.0
1.5
1.0
0.5
0.1
250
75
100
1045 G04
–25
50
125
V
+
= 5V
R
SET
= 10k
R
SET
= 1M
R
SET
(Ω)
20
18
16
14
12
10
8
6
4
2
0
100 10k 100k 1M
1045 G05
1k
COMPARATOR HYSTERESIS (mV)
V
+
= 5V
Hysteresis vs R
SET
TEMPERATURE (°C)
–50
V
+
TO V
–
CURRENT (mA)
5
4
3
2
1
0
250
75
100
1045 G01
–25
50
125
V
+
= 5V
R
SET
= 0
R
SET
= 10k
R
SET
= 1M
t
d
Response Time Test Circuit Figure 1 250 ns
R
SET
= 10k, ±100mV Drive ● 350 ns
t
SETUP
Time Before Rising Edge of I
SET
that Test Circuit Figure 2 80 ns
Data Must Be Present
t
HOLD
Time After Rising Edge of I
SET
that Test Circuit Figure 2 0 ns
Data Must Be Present
t
ACC
Falling Edge of DISABLE to Logic Test Circuit Figure 3 165 ns
Level (from Hi-Z State)
t
IH
, t
OH
Rising Edge of DISABLE to Hi-Z State Test Circuit Figure 3 200 ns
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
AC ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
+
= V
OH
= 5V, V
–
= V
OL
= 0V, unless otherwise specified.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

LTC1045CSW#TRPBF

Mfr. #:
Buy LTC1045CSW#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Translation - Voltage Levels Progmable uP Hex Translator/Rcv/Drvr
Lifecycle:
New from this manufacturer.
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