LTC1544_15 Datasheet, PDF (4/20 Pages) Linear Technology – Software-Selectable Multiprotocol Transceiver

LTC1544
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating tempera-
ture range, otherwise specifications are at T_A = 25°C. V_CC = 5V, V_DD = 8V, V_EE = – 7V for V.28, – 5.5V for V.10, V.11 (Notes 2, 3)
SYMBOL PARAMETER
V.10 Driver
V_O
Output Voltage
V_T
Output Voltage
I_SS
Short-Circuit Current
I_OZ
Output Leakage Current
t_r, t_f
Rise or Fall Time
t _PLH
Input to Output
t _PHL
Input to Output
V.10 Receiver
CONDITIONS
Open Circuit, R_L = 3.9k
R_L = 450Ω (Figure 3)
R_L = 450Ω (Figure 3)
V_O = GND
– 0.25V ≤ V_O ≤ 0.25V, Power Off or
No-Cable Mode or Driver Disabled
R_L = 450Ω, C_L = 100pF (Figures 3, 7)
R_L = 450Ω, C_L = 100pF (Figures 3, 7)
R_L = 450Ω, C_L = 100pF (Figures 3, 7)
MIN TYP MAX
q ±4
q ±3.6
0.9V_O
q
±0.1
±6
±150
±100
2
1
1
UNITS
V
V
mA
µA
µs
µs
µs
V_TH
∆V_TH
I_IN
R_IN
t_r, t_f
t_PLH
t_PHL
∆t
V.28 Driver
Receiver Input Threshold Voltage
Receiver Input Hysteresis
Receiver Input Current
Receiver Input Impedance
Rise or Fall Time
Input to Output
Input to Output
Input to Output Difference, t_PLH – t_PHL
V_O
Output Voltage
I_SS
Short-Circuit Current
I_OZ
Output Leakage Current
SR
Slew Rate
t _PLH
Input to Output
t _PHL
Input to Output
V.28 Receiver
– 10V ≤ V_A ≤ 10V
– 10V ≤ V_A ≤ 10V
(Figures 4, 8)
(Figures 4, 8)
(Figures 4, 8)
(Figures 4, 8)
Open Circuit
R_L = 3k (Figure 3)
V_O = GND
– 0.25V ≤ V_O ≤ 0.25V, Power Off or
No-Cable Mode or Driver Disabled
R_L = 3k, C_L = 2500pF (Figures 3, 7)
R_L = 3k, C_L = 2500pF (Figures 3, 7)
R_L = 3k, C_L = 2500pF (Figures 3, 7)
q – 0.25
0.25
V
q
25
50
mV
q
± 0.66
mA
q 15
30
kΩ
15
ns
55
ns
109
ns
60
ns
q
± 10
V
q ±5
±8.5
V
q
±150
mA
q
±1 ±100
µA
q
4
30
V/µs
q
1.3
2.5
µs
q
1.3
2.5
µs
V_THL
V_TLH
∆V_TH
R_IN
t_r, t_f
t_PLH
t_PHL
Input Low Threshold Voltage
Input High Threshold Voltage
Receiver Input Hysterisis
Receiver Input Impedance
Rise or Fall Time
Input to Output
Input to Output
– 15V ≤ V_A ≤ 15V
(Figures 4, 8)
(Figures 4, 8)
(Figures 4, 8)
q
1.5
0.8
V
q
2
1.6
V
q
0
0.1
0.3
V
q
3
5
7
kΩ
15
ns
q
60
100
ns
q
150 450
ns
Note 1: Absolute Maximum Ratings are those beyond which the safety of a
device may be impaired.
Note 2: All currents into device pins are positive; all currents out of device
are negative. All voltages are referenced to device ground unless otherwise
specified.
Note 3: All typicals are given for V_CC = 5V, V_DD = 8V, V_EE = – 7V for V.28,
– 5.5V for V.10, V.11 and T_A = 25°C.
4