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PDF CCVGA7C5 Data sheet ( Hoja de datos )
| Número de pieza | CCVGA7C5 | |
| Descripción | VGA PORT COMPANION CIRCUIT | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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UNISONIC TECHNOLOGIES CO., LTD
CCVGA7C5
Preliminary
VGA PORT COMPANION
CIRCUIT
TVS
DESCRIPTION
The UTC CCVGA7C5 is an ESD solution for the VGA port
connector. This device integrates ESD protection for all signals,
Two non-inverting drivers provide buffering for the HSYNC
and VSYNC signals from the video controller IC. These buffers
accept TTL input levels and convert them to CMOS output levels
that swing between Ground and VCC 。 These drivers have a
nominal 60Ω output impedance to match the characteristic
impedance of the HSYNC and VSYNC lines of the video cables
typically used. The inputs of these drivers also have high
impedance pull−ups (50kΩ nom.) pulling up to the VAUX rail.
In addition, the DDC_CLOCK and DDC_DATA channels have
1.8kΩ resistors pulling these inputs up to the main 5V (VCC) rail.
The upper ESD diodes for the R, G and B channels are connected to a separate supply rail (VRGB) to facilitate
interfacing to graphics controller ICs with low voltage supplies. The remaining channels are connected to the main 5
V rail (VCC). The lower diodes for the R, G and B channels are also connected to a dedicated ground pin (GNDA) to
minimize crosstalk due to common ground impedance.
ESD protection is implemented with current steering diodes designed to safely handle the high peak surge currents
associated with the IEC−1000−4−2 Level−4 ESD Protection Standard (±8kV contact discharge). When the channels
are subjected to an electrostatic discharge, the ESD current pulse is diverted via the protection diodes into the
positive supply rails or ground where they may be safely dissipated.
FEATURES
* 7 Channels of ESD Protection Designed to Meet
IEC−1000−4−2 Level−4 ESD Requirements (±8kV Contact
Discharge)
* Three Independent Supply Pins (VCC, VRGB and VAUX) to
Facilitate Operation with Sub−Micron Graphics Controller ICs
* Very Low Loading Capacitance from ESD Protection Diodes
at Less than 5pF Typical
* TTL to CMOS Level−Translating Buffers for the
HSYNC and VSYNC Lines
* High impedance Pull−Ups (50kΩ Nominal to
VAUX) for HSYNC and VSYNC Inputs
* Pull−Up Resistors (1.8kΩ Nominal to VCC) for
DDC_CLK and DDC_DATA Lines
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
CCVGA7C5L-R16-T
CCVGA7C5G-R16-T
CCVGA7C5L-R16-R
CCVGA7C5G-R16-R
Package
SSOP-16
SSOP-16
Packing
Tube
Tape Reel
CCVGA7C5L-R16-T
(1)Packing Type
(2)Package Type
(3)Lead Free
(1) T: Tube, R: Tape Reel
(2) R16: SSOP-16
(3) L: Lead Free, G: Halogen Free
www.unisonic.com.tw
Copyright © 2013 Unisonic Technologies Co., Ltd
1 of 6
QW-R223-021.a
http://www.Datasheet4U.com
1 page  
CCVGA7C5
Preliminary
TVS
ELECTRICAL CHARACTERISTICS (Note 1)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNIT
Diode Forward Voltage
VF IF=10mA
1.0 V
Logic High Output Voltage
Logic Low Output Voltage
VOH IOH=-4mA, VCC=4.5V
VOL IOL=4mA, VCC=4.5V
4.0 V
0.4 V
Input
Current
R, G and B Pins
HSYNC, VSYNC
Pins
HSYNC, VSYNC
Pins
VRGB=3.63V, VIN=VRGB or GND
IIN VAUX=3.63V, VIN=VAUX
VAUX=3.63V, VIN=GND
±1 μA
±1 μA
-30.0 -72.5 -95.0 μA
VCC upply Current
ICC
VCC=5.5V, VAUX=VRGB=2.97V, All Inputs
and Outputs Floating
35 100 μA
VRGB supply Current
IRGB
R, G and B Pins at VCC r GND, All
Inputs and Outputs Floating
10 μA
R, G and B pins
5 pF
Input
Capacitance
HSYNC,
VSYNC pins
DDC_DATA,
DDC_CLK pins
CIN Note 2 Applies for All Cases
10 pF
5 pF
Pull−up Resistance
DDC_DATA, DDC_CLK pins
RPU
1.52 1.80 1.98 kΩ
ESD Withstand Voltage
VESD VCC=5 V, VRGB=3.3V, VAUX=3.3 V
±8
kV
SYNC Buffer L≥H Propagation
Delay
tPLH CL=50pF, VCC=5.0V, RL=500Ω (Note 3)
7.0 15.0 ns
SYNC Buffer H≥L Propagation
Delay
tPHL CL=50pF, VCC=5.0V, RL=500Ω (Note 3)
7.0 15.0 ns
SYNC Buffer Output Rise &
Fall Times
tR, tF CL=50pF, VCC=5.0V, RL=500Ω (Note 3)
7.0
ns
Notes: 1. All parameters specified over standard operating conditions unless otherwise noted.
2. Measured at 1MHz. R/G/B inputs biased at 1.65V with VRGB=3.3V. DDC_CLK and DDC_DATA biased at
2.5V with VCC=5V. HSYNC and VSYNC inputs biased at VAUX or GND with VAUX=3.3V and VCC=5V.
3. Applicable to the SYNC buffers only. Input signals swing between 0V and 3.0V, with rise and fall times ≤5
ns. Guaranteed by correlation to buffer output drive currents.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 6
QW-R223-021.a
http://www.Datasheet4U.com
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet CCVGA7C5.PDF ] | |
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