Datasheet

3
LTC1345
Note 1: The absolute maximum ratings are those values beyond which the
safety of the device cannot be guaranteed.
Note 2: All currents into device pins are termed positive; all currents out of
device pins are termed negative. All voltages are referenced to device
ground unless otherwise specified.
Note 3: All typicals are given for V
CC
= 5V, C1 = C2 = C3 = 1µF ceramic
capacitors and T
A
= 25°C.
Note 4: Maximum data rate is specified for NRZ data encoding scheme.
The maximum data rate may be different for other data encoding schemes.
Data rate is guaranteed by correlation and is not tested.
TEMPERATURE (˚C)
–50
OUTPUT CURRENT (mA)
25
LTC1345 • TPC01
11
10
–25 0 50
9
13
12
75 100 125
V
CC
= 5V
Transmitter Output Current
vs Temperature
TEMPERATURE (˚C)
–50
TIME (ns)
25
LTC1345 • TPC03
10
5
–25 0 50
0
20
15
75 100 125
V
CC
= 5V
Transmitter Output Skew
vs Temperature
OUTPUT VOLTAGE (V)
–2.0
OUTPUT CURRENT (mA)
11
12
2.0
LTC1345 • TPC02
10
9
–1.0
0
1.0
13
–1.5
–0.5
0.5
1.5
T
A
= 25°C
V
CC
= 5V
Transmitter Output Current
vs Output Voltage
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
t
R
, t
F
Transmitter Rise or Fall Time Figures 1 and 3, V
OS
= 0V ● 740 ns
t
PLH
Transmitter Input to Output Figures 1 and 3, V
OS
= 0V ● 25 70 ns
t
PHL
Transmitter Input to Output Figures 1 and 3, V
OS
= 0V ● 25 70 ns
t
SKEW
Transmitter Output to Output Figures 1 and 3, V
OS
= 0V 0 ns
t
PLH
Receiver Input to Output Figures 1 and 4, V
OS
= 0V ● 49 100 ns
t
PHL
Receiver Input to Output Figures 1 and 4, V
OS
= 0V ● 52 100 ns
t
SKEW
Differential Receiver Skew, t
PLH
– t
PHL
Figures 1 and 4, V
OS
= 0V 3 ns
t
ZL
Receiver Enable to Output LOW Figures 2 and 5, C
L
= 15pF, S1 Closed ● 40 70 ns
t
ZH
Receiver Enable to Output HIGH Figures 2 and 5, C
L
= 15pF, S2 Closed ● 35 70 ns
t
LZ
Receiver Disable From LOW Figures 2 and 5, C
L
= 15pF, S1 Closed ● 30 70 ns
t
HZ
Receiver Disable From HIGH Figures 2 and 5, C
L
= 15pF, S2 Closed ● 35 70 ns
f
OSC
Charge Pump Oscillator Frequency 200 kHz
BR
MAX
Maximum Data Rate (Note 4) ● 10 15 Mbaud
AC ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 5V ±5% (Notes 2, 3), unless otherwise specified.
TYPICAL PERFOR A CE CHARACTERISTICS
UW