SI88X2X Datasheet, PDF (6/45 Pages) Silicon Laboratories – Isolation of up to 5000 Vrms

Si88x2x
Table 2. Electrical Characteristics¹ (Continued)
V_IN = 24 V; V_DDA = V_DDP = 3.0 to 5.5 V (see Figure 2) for all Si8822x/32x; V_DDA = 4.3 V (see Figure 3) for all Si8842x/62x;
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 Volt-
age
V_HYS
V_IH
0.44
V
2.0
—
—
V
Low Level Input Volt-
V_IL
age
—
—
0.8
V
High Level Output
V_OH
Voltage
l_OH = –4 mA
V_DDA, —
—
V
V_DDB –
0.4
Low Level Output
V_OL
Voltage
l_OL = 4 mA
—
—
0.4
V
Input Leakage Cur-
I_L
rent
—
—
±10
µA
Output Impedance
Z_O
Supply Current, C_LOAD = 15 pF
—
50
—

DC, VDDB = 3.3 V ± 10%
Si88x20
V_DDA
V_DDB
V_DDA
V_DDB
All inputs = 0
—
8.9
mA
All inputs = 0
—
5.2
All inputs = 1
—
5.6
All inputs = 1
—
5.1
Si88x21
V_DDA
V_DDB
V_DDA
V_DDB
All inputs = 0
—
7.9
mA
All inputs = 0
—
4.9
All inputs = 1
—
5.9
All inputs = 1
—
3.0
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
Rev. 0.5