HDMIULC6-4SC6 STMicroelectronics, HDMIULC6-4SC6 Datasheet - Page 6

• Manufacturer Part Number: HDMIULC6-4SC6
• Description: IC HDMI ESD PROTECTION SOT23-6
• Manufacturer: STMicroelectronics

Specifications of HDMIULC6-4SC6

• Voltage - Reverse Standoff (typ): 5V
• Voltage - Breakdown: 6V
• Polarization: 4 Channel Array - Bidirectional
• Mounting Type: Surface Mount
• Package / Case: SOT-23-6
• Applications: General Purpose
• Number Of Circuits: 4
• Voltage - Working: 5V
• Voltage - Clamping: 6V
• Technology: Diode Array
• Polarity: Unidirectional
• Channels: 4 Channels
• Clamping Voltage: 17 V
• Operating Voltage: 5 V
• Breakdown Voltage: 6 V
• Termination Style: SMD/SMT
• Capacitance: 0.5 pF
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Dimensions: 1.75(Max) mm W x 3.05(Max) mm L
• Esd Protection Voltage: ±15KV@Air Gap/±15KV@Contact Disc
• Mounting Style: Surface Mount
• Clamping Voltage (max): 17V
• Leakage Current (max): 0.5uA
• Capacitance Value: 1pF
• Operating Temperature Min Deg. C: -55C
• Operating Temperature Max Deg. C: 125C
• Product Length (mm): 3.05mm
• Product Depth (mm): 1.75mm
• Product Height (mm): 1.3mm
• Pin Count: 6
• Rad Hardened: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-5239-2

Technical information
3
3.1
Note:
3.2
6/11
Technical information
Surge protection
The HDMIULC6-4SC6 is particularly optimized to perform ESD surge protection based on
the rail to rail topology.
The clamping voltage V
with: V
(V
and V
Calculation example
We assume that the value of the dynamic resistance of the clamping diode is typically:
R
We assume that the value of the dynamic resisteance of the transil diode is typically
R
For an IEC 61000-4-2 surge Level 4 (Contact Discharge: V
V
We find:
The calculations do not take into account phenomena due to parasitic inductances.
Surge protection application example
If we consider that the connections from the pin V
GND to PCB GND plane are two tracks 10 mm long and 0.5 mm wide, we can assume that
the parasitic inductances, L
IEC 61000-4-2 surge occurs on the data line, due to the rise time of this spike (tr = 1 ns), the
voltage V
The dI/dt is calculated as: dI/dt = Ip/tr = 24 A/ns for an IEC 61000-4-2 surge level 4 (contact
discharge V
The over voltage due to the parasitic inductances is:
L
By taking into account the effect of these parasitic inductances due to unsuitable layout, the
clamping voltage will be:
We can reduce as much as possible these phenomena with simple layout optimization.
I/O
BUS
d
d_TRANSIL
F
= 0.5
.dI/dt = L
forward drop voltage) / (V
= +5 V, and, in first approximation, we assume that: I
TRANSIL
F
= V
CL
and V
T
= 0.5
g
has an extra value equal to L
GND
= 8 kV, R
+ R
= V
.dI/dt = 6 x 24 = 144 V
d
T
BR
.I
= 1.1 V.
p
and V
+ R
g
CL
V
V
V
V
V
V
d_TRANSIL
= 330
CL
CL
CL
CL
CL
CL
BR
can be calculated as follows:
VBUS
+ = V
- = - V
+ = +31.2 V
- = -13.1 V
+ = +31.2 + 144 +144 = 319.2 V
- = -13.1 - 144 -144 = -301.1 V
= 6.1 V
T
forward drop threshold voltage)
, L
TRANSIL
F
I/O
. I
, and L
P
I/O
+ V
GND
.dI/dt + L
F
, of these tracks are about 6 nH. So when an
for positive surges
for negative surges
BUS
GND
to V
.dI/dt.
CC
p
g
= 8 kV, R
= V
, from I/O to data line, and from
g
/ R
g
g
= 24 A.
= 330 ),
HDMIULC6-4SC6