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STV6415A
IC bus-controlled video matrix switch
Features

20 MHz bandwidth Cascadable with another STV6415A (internal address can be changed by pin 7 voltage) Eight inputs (CVBS, RGB, Chroma, ...) Six outputs Possibility of chroma signal for each input by switching off the clamp with an external resistor bridge IC bus-controlled 6.5 dB gain between any input and output -55 dB crosstalk at 5 MHz Full ESD protection
Description
The main function of the STV6415A is to switch eight video input sources on the six outputs. Each output can be switched to only one of the inputs, whereas any single input may be connected to several outputs. All switching possibilities are controlled through the IC bus. Table 1.
Order code STV6415AB

Device summary
Packaging SO 20 Plastic small outline package
August 2008
Rev 1
1/15
www.st.com 1
STV6415A
1 2
General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 IC bus characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 IC bus selections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.5.1 Second and following bytes (input/output selection) . . . . . . . . . . . . . . . . 8
Input/output pin configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Using a second STV6415A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1 Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2/15
STV6415A
General description
1
General description
Figure 1. STV6415A Pin-out diagram
Input Data Input Clock Input Input Prog Input VCC Input 1 2 S 3 4 5 6 7 8 9 10 T V 6 4 1 5 A 14 13 12 11 Output Output Ground Input 20 19 18 17 16 15 Input Ground Output Output Output Output
3/15
General description Figure 2. STV6415A block diagram
OutputOutputOutputOutputOutputOutput Ground 18 Input Input Input Input Input Input Input Input 1 3 5 6 8 10 11 20 17 16 15 14 13 12
STV6415A
Bus Decoder
2 Data
7 Prog
4 Clock
9 VCC
19 Ground
The main function of the STV6415A is to switch eight video input sources on the six outputs. Each output can be switched to only one of the inputs, whereas any single input may be connected to several outputs. The lowest level of each signal is aligned on each input (bottom of sync pulse for CVBS or Black Level for RGB signals). The nominal gain between any input and output is 6.5 dB. For Chroma signals, the alignment is switched off by forcing, with an external 5 VDC resistor bridge on the input. Each input can be used as a normal input or as a Chroma input (with external resistor bridge). All the switching possibilities are changed through the IC bus. Driving a 75 load requires an external transistor. The switch configuration is defined by words of 16 bits: the IC address (8 bits) then one output configuration (8 bits). Therefore, six separated words of 16 bits are necessary to determine the starting configuration at power-on (power supply: 0 to 10 V). A new configuration needs only the words (16 bits) of the changed output channels.
4/15
STV6415A
STV6415A
Electrical characteristics
2
2.1
Table 1.
Symbol VCC TA TSTG
Electrical characteristics
Absolute maximum ratings
Absolute maximum ratings
Parameter Supply voltage (pin 9) Operating ambient temperature range Storage temperature range Value 12 0 to +70 -20 to +150 Unit V
oC oC
2.2
Table 2. Symbol
RthJA
Thermal data
Thermal data Parameter
Junction-to-ambient thermal resistance SO20
Value
100
Unit
o
C/W
2.3
Table 3.
Symbol VCC ICC Inputs
Electrical characteristics
(TA = 25 C , VCC = 10 V , RLOAD = 10 k , CLOAD = 3 pF (unless otherwise specified) Electrical characteristics
Parameter Supply voltage (pin 9) Power supply current (without load on outputs; VCC = 10 V) Min. 8 14 Typ. 10 19 Max. 11 25 Unit V mA
Signal amplitude (CVBS signal) Input current (input voltage = 5 VDC) DC level DC level shift (temperature from 0 to 70C) Outputs (VIN = 1 VPP for all dynamic tests) Pins 13,14, 15, 16, 17 and 18 Dynamic Output impedance Gain Bandwidth Crosstalk -1dB attenuation -3dB attenuation f = 3.58 MHz f = 5 MHz 6 7 4.5 5.5 25 6.5 15 20 -60 -55 3.3 1 3.6 5
2 3 3.9 100
VPP A V mV
VPP 50 7 dB MHz -50 -45 dB
5/15
Electrical characteristics Table 3.
Symbol DC Level Minimum output load (RLOAD)
STV6415A
Electrical characteristics (continued)
Parameter Min. 2.40 2 Typ. 3.05 Max. 3.50 Unit V k
2.4
Table 4.
Symbol
IC bus characteristics
(TA = 25 C , VCC = 10 V) IC bus characteristics
Parameter Test conditions Min. Max. Unit
PROG (pin 7) Threshold voltage (typical value is 1.3) SCL (pin 4) VIL VIH ILI fSCL tR tF CI Low level input voltage High level input voltage Input leakage current Clock frequency Input rise time Input fall time Input capacitance 1.5 V to 3 V 3 V to 1.5 V VI = 0 to VCC -0.3 2.3 -10 0 +1.0 VCC + 0.3 +10 100 1000 300 10 V V A kHz ns ns pF 1.00 1.65 V
SDA (pin 2) VIL VIH ILI CI tR tF VOL tF CL Timing tLOW tHIGH tSU, DAT tHD, DAT tSU, STO Clock low period Clock high period Data set-up time Data hold time Set-up time from clock high to stop 4.7 4.0 250 0 4.0 340 s s ns ns s Low level input voltage High level input voltage Input leakage current Input capacitance Input rise time Input fall time Low level output voltage Output fall time Load capacitance 1.5 V to 3 V 3 V to 1.5 V IOL = 3mA 3 V to 1.5 V VI = 0 to VCC -0.3 2.3 -10 +1.0 VCC + 0.3 +10 10 1000 300 0.4 250 400 V V A pF ns ns V ns pF
6/15
STV6415A Table 4.
Symbol tBUF tHD, STA tSU, STA
Electrical characteristics IC bus characteristics (continued)
Parameter Test conditions Min. 4.7 4.0 4.7 Max. Unit s s s
Start set-up time following a stop Start hold time Start set-up time following clock low-to-high transition
Figure 3.
IC bus timing
SDA tBUF tLOW tF
SCL tHD,STA tR tHD,DAT tHIGH tSU,DAT
SDA
(start, stop)
tSU,STA
tSU,STO
2.5
IC bus selections
The IC chip address is defined by the first byte. The second and following bytes define the input/output configurations. Table 5.
0x86 0x06
First byte (address)
0b1000 0110 0b0000 0110 When PROG pin is connected to Ground When PROG pin is connected to VCC
7/15
Electrical characteristics
STV6415A
2.5.1
Table 6.
Second and following bytes (input/output selection)
IC bus output selections
Input address (LSB) XXX XXX XXX --XXX XXX XXX --Pin 18 Pin 14 Pin 16 Not used Pin 17 Pin 13 Pin 15 Not used Output is selected by the 5 MSBs. Selected output
Output address (MSB) 00000 00100 00010 00110 00001 00101 00011 00111
Table 7.
IC bus input selections
Input address (LSB) 000 100 010 110 001 101 011 111 Pin 5 Pin 8 Pin 3 Pin 20 Pin 6 Pin 10 Pin 1 Pin 11 Input is selected by the 3 LSBs. Selected input
Output address (MSB) 00XXX 00XXX 00XXX 00XXX 00XXX 00XXX 00XXX 00XXX
Example: 00100 101 connects pin 10 (input) to pin 14 (output) (equals 25 in hexadecimal)
8/15
STV6415A
Electrical characteristics
2.6
Figure 4.
Input/output pin configurations
Input configuration
VCC
Figure 5.
Output configuration
VCC
30 k x3 0.36 VCC 14 k All Video Outputs Pins 13, 14, 15, 16, 17 and 18
Pins 1, 3, 5, 6, 8, 10, 11 and 20
23 k
Figure 6.
Bus I/O configuration
50 k
Figure 7.
VCC pin configuration
VCC
9
Pins 2, 4 and 7
VREF 10 k *
20 k ACK 150 * For Pin 2 (Data) Only) 20 k 150
2.7
Using a second STV6415A
The programming input pin (PROG) allows two STV6415A circuits to operate in parallel, and to select them independently through the IC bus by modifying the address byte. Consequently, the switching capabilities are doubled, or IC1 and IC2 can be cascaded.
9/15
Electrical characteristics Figure 8. Cascadable STV6415A configuration
STV6415A
PROG Logical "0" IC1 MCU
Video inputs
Video outputs
PROG Logical "1" Video inputs IC2 Video outputs
10/15
STV6415A
Electrical characteristics
2.8
Note:
Application diagram
Whenever an input is not used, it must be bypassed to ground through a 220 nF capacitor. The application diagram presented here is an example only and is subject to change without notice. The real application diagram will depend on application conditions and constraints. Application diagram
100 k 22 F 220 nF 11 75 100 k 100 F 10 12 75
Figure 9.
CEXT
Input
Input
10
YEXT
Ground
VCC
9
VCC (10 V)
220 nF
CVBSOUT2
10 k
13
Output
Input
8 220 nF 75
CVBS 3
COUT2
10 k
14
Output
Prog
7
Prog (Bus)
100 k 22 F
YOUT2
10 k
15
Output
Input
6 100 k 220 nF 75
CINT
CVBSOUT1
10 k
16
Output
Input
5 75
YINT
COUT1
17 10 k
Output
Clock
4
Clock (Bus)
YOUT1
18 10 k
220 nF
Output
Input
3 75
CVBS 2
Y, C Separator
Y, C Adder
19
Ground
Data
2
Data (Bus)
220 nF
220 nF 20
Y+C
75
Input
Input
1 75
CVBS 1
11/15
Package mechanical data
STV6415A
3
Package mechanical data
Figure 10. 20-pin plastic SO (small outline) package, 300-mil width
D L A1 e G Seating Plane B A k C h x 45
EH
Table 8.
Dim.
SO20 package
mm Min. Typ. Max. 2.65 0.30 0.51 0.32 12.60 7.40 1.27 10.00 0.25 0 0.40 10.65 0.74 8 1.27 0.10 Number of pins 0.394 0.010 0 0.016 13.00 7.60 0.4961 0.2914 0.050 0.419 0.029 8 0.050 0.004 Min. 0.0926 0.0040 0.0130 inches Typ. Max. 0.1043 0.0118 0.0200 0.0125 0.5118 0.2992
A A1 B C D E e H h k L G
2.35 0.10 0.33
N
20
12/15
STV6415A
Package mechanical data
3.1
Environmental
In order to meet environmental requirements, STMicroelectronics offers the STV6415A in ECOPACK(R) packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at www.st.com. The ECOPACK version can be identified by the letter `E' beside the ST logo. Both types are compatible with ROHS.
13/15
Document revision history
STV6415A
4
Document revision history
Table 9.
Date 28-Aug-2008
Document revision history
Revision 1 Initial Release Changes
14/15
STV6415A
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