SI88X4X Datasheet, PDF (9/48 Pages) Silicon Laboratories – Precise timing on digital isolators

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
DC, VDDx = 5 V ± 10%
Si88x40
V_DDA
V_DDB
V_DDA
V_DDB
All inputs = 0
All inputs = 0
All inputs = 1
All inputs = 1
— 13.1 —
mA
—
5.6
—
—
5.2
—
—
5.4
—
Si88x41
V_DDA
V_DDB
V_DDA
V_DDB
All inputs = 0
All inputs = 0
All inputs = 1
All inputs = 1
— 11.1 —
mA
—
6.9
—
—
5.7
—
—
5.2
—
Si88x42
V_DDA
V_DDB
V_DDA
V_DDB
All inputs = 0
All inputs = 0
All inputs = 1
All inputs = 1
— 10.1 —
mA
—
7.9
—
—
6.2
—
—
4.4
—
Si88x43
V_DDA
V_DDB
V_DDA
V_DDB
All inputs = 0
All inputs = 0
All inputs = 1
All inputs = 1
—
8.6
—
mA
—
9.2
—
—
6.6
—
—
3.9
—
Si88x44
V_DDA
V_DDB
V_DDA
V_DDB
All inputs = 0
All inputs = 0
All inputs = 1
All inputs = 1
—
6.8
—
mA
— 11.0 —
—
6.7
—
—
3.8
—
1 Mbps, VDDx = 5 V ± 10% (All Inputs = 500 kHz Square Wave, C_LOAD = 15 pF)
Si88x40
mA
V_DDA
V_DDB
—
9.1
—
—
5.8
—
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.
Preliminary Rev. 0.6
9