LTC1546_15 Datasheet, PDF (3/20 Pages) Linear Technology – Software-Selectable Multiprotocol Transceiver with Termination

LTC1546
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_CC = 5V (Notes 2, 3)
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
f_OSC
Charge Pump Oscillator Frequency
500
t_r
Charge Pump Rise Time
No-Cable Mode/Power-Off to Normal Operation
2
Logic Inputs and Outputs
V_IH
Logic Input High Voltage
V_IL
Logic Input Low Voltage
I_IN
Logic Input Current
V_OH
Output High Voltage
V_OL
Output Low Voltage
I_OSR
Output Short-Circuit Current
I_OZR
Three-State Output Current
V.11 Driver
D1, D2, D3
M0, M1, M2, DCE = GND
M0, M1, M2, DCE = V_CC
I_O = – 3mA
I_O = 3mA
0V ≤ V_O ≤ V_CC
M0 = M1 = M2 = V_CC, 0V ≤ V_O ≤ V_CC
q
2
q
0.8
q
± 10
q – 120 – 75 – 30
q
± 10
q
3
4.5
q
0.3
0.45
q – 50
50
±1
V_ODO
V_ODL
∆V_OD
Open Circuit Differential Output Voltage
Loaded Differential Output Voltage
Change in Magnitude of Differential
Output Voltage
R_L = 1.95k (Figure 1)
R_L = 50Ω (Figure 1)
R_L = 50Ω (Figure 1)
R_L = 50Ω (Figure 1)
q
0.5V_ODO
q ±2
q
±5
0.67V_ODO
0.2
V_OC
∆V_OC
Common Mode Output Voltage
Change in Magnitude of Common Mode
Output Voltage
R_L = 50Ω (Figure 1)
R_L = 50Ω (Figure 1)
q
3
q
0.2
I_SS
Short-Circuit Current
I_OZ
Output Leakage Current
V_OUT = GND
V_A and V_B ≤ 0.25V, Power Off or
q
No-Cable Mode or Driver Disabled
±150
± 1 ±100
t_r, t_f
Rise or Fall Time
t _PLH
Input to Output Rising
t _PHL
Input to Output Falling
∆t
Input to Output Difference, t_PLH – t_PHL
t _SKEW
Output to Output Skew
V.11 Receiver
(Figures 2, 13)
(Figures 2, 13)
(Figures 2, 13)
(Figures 2, 13)
(Figures 2, 13)
q
2
15
25
q 15
40
65
q 15
40
65
q
0
3
12
3
V_TH
Input Threshold Voltage
∆V_TH
Input Hysteresis
R_IN
Input Impedance
t_r, t_f
Rise or Fall Time
t _PLH
Input to Output Rising
t _PHL
Input to Output Falling
∆t
Input to Output Difference, t_PLH – t_PHL
V.35 Driver
– 7V ≤ V_CM ≤ 7V
– 7V ≤ V_CM ≤ 7V
–7V ≤ V_CM ≤ 7V (Figure 3)
C_L = 50pF (Figures 4, 14)
C_L = 50pF (Figures 4, 14)
C_L = 50pF (Figures 4, 14)
C_L = 50pF (Figures 4, 14)
q – 0.2
0.2
q
15
40
q 100
103
15
q
50
90
q
50
90
q
0
4
25
V_OD
Differential Output Voltage
V_OA, V_OB
V_OC
Single-Ended Output Voltage
Transmitter Output Offset
Open Circuit, R_L = 1.95k (Figure 5)
With Load, – 4V ≤ V_CM ≤ 4V (Figure 6)
Open Circuit, R_L = 1.95k (Figure 5)
R_L = 50Ω (Figure 5)
q
±0.44 ±0.55
q
q
±1.2
±0.66
±1.2
±0.6
UNITS
kHz
ms
V
V
µA
µA
µA
V
V
mA
µA
V
V
V
V
V
V
mA
µA
ns
ns
ns
ns
ns
V
mV
Ω
ns
ns
ns
ns
V
V
V
V
3