LTC1320CS View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC1320CS Datasheet PDF : 8 Pages
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LTC1320
U
SWITCHI G CHARACTERISTICS VS = ±5V ±5%, TA = 0°C to 70°C (Notes 2, 3)
SYMBOL
tPLH, HL
tSKEW
tr, f
tENH, L
tH, Ldis
tPLH, HL
tr, f
tPLH, HL
tENH, L
tH, Ldis
PARAMETER
Differential Driver Propagation Delay
Differential Driver Output to Output
Differential Driver Rise/Fall Time
Driver Enable to Output Active
Driver Output Active to Disable
Single-Ended Driver Propagation Delay
Single-Ended Driver Rise/Fall Time
Receiver Propagation Delay
Receiver Enable to Output Active
Receiver Output Active to Disable
CONDITIONS
RL = 100Ω, CL = 100pF (Figures 2, 8)
RL = 100Ω, CL = 100pF (Figures 2, 8)
RL = 100Ω, CL = 100pF (Figures 2, 8)
CL = 100pF (Figures 3, 4, 10)
CL = 15pF (Figures 3, 4, 10)
RL = 450Ω, CL = 100pF (Figures 5, 11)
RL = 450Ω, CL = 100pF (Figures 5, 12)
CL = 15pF (Figures 13, 14)
CL = 100pF (Figures 6, 7, 15)
CL = 15pF (Figures 6, 7, 15)
MIN TYP MAX UNITS
q
40
120
ns
q
10
50
ns
q
15
80
ns
q
50
150
ns
q
50
150
ns
q
40
120
ns
q
15
80
ns
q
60
160
ns
q
30
100
ns
q
30
100
ns
The q denotes specifications which apply over the full operating
temperature range.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All currents into device pins are positive; all currents out of
device pins are negative. All voltages are referenced to ground unless
otherwise specified.
Note 3: All typicals are given at VS = ±5V, TA = 25°C.
TYPICAL PERFOR A CE CHARACTERISTICS
Output Swing vs Load Current
5
4
3
OUTPUT HIGH
2
1
0
–1
–2
–3
OUTPUT LOW
–4
–5
0
20
40
60
80 100
OUTPUT CURRENT (mA)
LTC1320 • G01
Differential Output Swing vs
Load Current
10
Supply Current vs Temperature
1.2
8
1.1
IDD
6
1.0
4
0.004
2
0.002
ISS
0
0
20
40
60
80 100
OUTPUT CURRENT (mA)
LTC1320 • G02
0
0 10 20 30 40 50 60 70
TEMPERATURE (°C)
LTC1320 • G03
PI FU CTIO S
TXD (Pin 1): RS422 Differential Driver Input (TTL Compat-
ible).
TXI (Pin 2): RS562 Single-Ended Driver Input (TTL com-
patible.
TXDEN (Pin 3): RS422 Differential Driver Output Enable
(TTL Compatible). A high level on this pin forces the
RS422 driver into three-state; a low level enables the
driver. This input does not affect the RS562 single-ended
driver.
SD (Pin 4): Shutdown Input (TTL Compatible). When this
pin is high, the chip is shut down: all driver outputs three-
state and the supply current drops to 30µA. A low on this
pin allows normal operation.
3
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