SI8642EC-B-IS1 Silicon Laboratories Inc, SI8642EC-B-IS1 Datasheet - Page 20

• Manufacturer Part Number: SI8642EC-B-IS1
• Description: IC ISOLATOR 4CH 3.75KV 16-SOIC
• Manufacturer: Silicon Laboratories Inc

Specifications of SI8642EC-B-IS1

• Number Of Channels: 4
• Supply Voltage (max): 3.75 KV
• Mounting Style: SMD/SMT
• Package / Case: SOIC-16
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-2094-5

Si8640/41/42/45
3. Device Operation
Device behavior during start-up, normal operation, and shutdown is shown in Figure 8, where UVLO+ and UVLO-
are the positive-going and negative-going thresholds respectively. Refer to Table 12 to determine outputs when
power supply (VDD) is not present. Additionally, refer to Table 13 for logic conditions when enable pins are used.
20
Notes:
Input
X
X
X
X
V
1. VDDI and VDDO are the input and output power supplies. V
2. X = not applicable; H = Logic High; L = Logic Low; Hi-Z = High Impedance.
3. It is recommended that the enable inputs be connected to an external logic high or low level when the Si86xx is
4. No Connect (NC) replaces EN1 on Si8640/45. No Connect replaces EN2 on the Si8645. No Connects are not internally
5. “Powered” state (P) is defined as 2.5 V < VDD < 5.5 V.
6. “Unpowered” state (UP) is defined as VDD = 0 V.
7. Note that an I/O can power the die for a given side through an internal diode if its source has adequate current.
8. When using the enable pin (EN) function, the output pin state is driven into a high-impedance state when the EN pin is
9. See "5. Ordering Guide" on page 26 for details. This is the selectable fail-safe operating mode (ordering option). Some
H
L
7
7
7
7
I
1,2
is the enable control input located on the same output side.
operating in noisy environments.
connected and can be left floating, tied to VDD, or tied to GND.
disabled (EN = 0).
devices have default output state = H, and some have default output state = L, depending on the ordering part number
(OPN). For default high devices, the data channels have pull-ups on inputs/outputs. For default low devices, the data
channels have pull-downs on inputs/outputs.
Input
H or NC
H or NC
H or NC
EN
X
L
L
1,2,3,4
7
State
VDDI
UP
UP
P
P
P
P
1,5,6
State
Table 12. Si86xx Logic Operation
VDDO
UP
P
P
P
P
P
1,5,6
Undetermined
V
O
Output
Hi-Z
Hi-Z
Rev. 1.1
H
L
H
L
9
9
8
8
1,2
I
and V
Enabled, normal operation.
Disabled.
Upon transition of VDDI from unpowered to pow-
ered, V
than 1 µs.
Disabled.
Upon transition of VDDO from unpowered to pow-
ered, V
1 µs, if EN is in either the H or NC state. Upon
transition of VDDO from unpowered to powered,
V
O
O
returns to Hi-Z within 1 µs if EN is L.
are the respective input and output terminals. EN
O
O
returns to the same state as V
returns to the same state as V
Comments
I
I
in less
within