SI88240ED-IS Datasheet, PDF (6/48 Pages) Silicon Laboratories – QUAD DIGITAL ISOLATORS WITH DC-DC CONVERTER

Si88x4x
Table 2. Electrical Characteristics¹ (Continued)
V_IN = 24 V; V_DDA = 4.3 V (see Figure 3) for all Si8844x/64x; V_DDA = V_DDP = 3.0 to 5.5 V (see Figure 2) for all Si8824x/34x;
T_A = –40 to 125 °C unless otherwise noted
Parameter
Symbol
Test Condition
Min Typ Max Unit
Negative-Going Input
VT–
Threshold
All inputs falling
1.23
V
Input Hysteresis
High Level Input Voltage
Low Level Input Voltage
High Level Output Voltage
V_HYS
V_IH
V_IL
V_OH
loh = –4 mA
0.44
V
2.0
—
—
V
—
—
0.8
V
V_DDA, —
—
V
V_DDB –
0.4
Low Level Output Voltage
V_OL
Input Leakage Current
I_L
Output Impedance
Z_O
Supply Current, C_LOAD = 15 pF
DC, VDDx = 3.3 V ± 10%
lol = 4 mA
—
—
0.4
V
—
—
±10
µA
—
50
—

Si88x40
V_DDA
V_DDB
V_DDA
V_DDB
All inputs = 0
— 12.9
mA
All inputs = 0
—
5.4
All inputs = 1
—
5.1
All inputs = 1
—
5.3
Si88x41
V_DDA
V_DDB
V_DDA
V_DDB
All inputs = 0
— 10.9
mA
All inputs = 0
—
6.8
All inputs = 1
—
5.6
All inputs = 1
—
5.1
Si88x42
V_DDA
V_DDB
V_DDA
V_DDB
All inputs = 0
—
9.7
mA
All inputs = 0
—
7.8
All inputs = 1
—
5.9
All inputs = 1
—
4.3
Notes:
1. Over recommended operating conditions as noted in Table 1.
2. VOUT = VSNS x (1 + R1/R2) + R1 x I_offset
3. VDDP current needed for dc-dc circuits.
4. VDDA current needed for dc-dc circuits.
5. The nominal output impedance of an isolator driver channel is approximately 50 , ±40%, which is a combination of the
value of the on-chip series termination resistor and channel resistance of the output driver FET. When driving loads
where transmission line effects will be a factor, output pins should be appropriately terminated with controlled
impedance PCB traces.
6. tPSK(P-P) is the magnitude of the difference in propagation delay times measured between different units operating at
the same supply voltages, load, and ambient temperature.
7. Start-up time is the time period from when the UVLO threshold is exceeded to valid data at the output.
6
Preliminary Rev. 0.6