ST ST3DV520A User Manual

ST3DV520A

High bandwidth switch with 20to 10-bit MUX/DEMUX

Features

■Low RON: 4.0 Ω typical

■VCC operating range: 3.0 to 3.6 V

■Enhanced ESD protection: > 8 kV (contact) and 15 kV (HBM)

■Channel on capacitance: 9.5 pF typical

■Switching time speed: 9 ns

■Near to zero propagation delay: 250 ps

■Very low crosstalk: -45 dB at 250 MHz

■Bit-to-bit skew: 200 ps

■> 600 MHz -3 dB typical bandwidth (or data frequency)

■Package: QFN56

QFN56

Table 1.	Device summary
Order code		Package	Packing
ST3DV520AQTR		QFN56	Tape and reel

January 2011

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Contents	ST3DV520A

Contents

1	Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 3
2	Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	4
3	Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
4	Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7
5	Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	16
6	Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	19

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ST3DV520A	Description

1 Description

The ST3DV520A 20to 10-bit multiplexer/demultiplexer is a high bandwidth bidirectional switch with low RON suitable for analog video applications.

The signal from each input is multiplexed into one of two selected outputs, while the unselected switch goes into Hi-Z status. The device is designed for very low crosstalk, low bit-to-bit skew and low I/O capacitance.

The ST3DV520A supports high definition (HD) video switching standards and is also suitable for general-purpose switching that requires high signal integrity.

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Pin description	ST3DV520A

2 Pin description

Figure 1. Pin connection (top through view)

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	Table 2.	Pin description
		Pin	Symbol	Name and function
	2, 3, 7, 8, 11, 12, 14, 15, 19, 20		A, B, C, D, E, F, G, H, I, J	10-bit bus
	22, 23, 48, 47, 43, 42, 37, 36,		A0, B0, C0, D0, E0, F0, G0,	10-bit multiplexed to bus 0
		32, 31	H0, I0, J0
	25, 26, 46, 45, 41, 40, 35, 34,		A1, B1, C1, D1, E1, F1, G1,	10-bit multiplexed to bus 1
		30, 29	H1, I1, J1
		5, 51, 52, 54	N/C	Not connected
		17	SEL	Bus and LED switch selection
	4, 10, 18, 27, 38, 50, 56		VCC	Supply voltage
	1, 6, 9, 13, 16, 21, 24, 28, 33,		GND	Ground
	39, 44, 49, 53, 55

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ST3DV520A	Pin description

Figure 2. Input equivalent circuit

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Table 3.	Switch function table
	SEL	Function
	L	10-bit bus to 10-bit multiplexed bus 0
	H	10-bit bus to 10-bit multiplexed bus 1

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Maximum ratings	ST3DV520A

3 Maximum ratings

Stressing the device above the rating listed in the “absolute maximum ratings” table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Table 4.	Absolute maximum ratings
Symbol	Parameter	Value	Unit
VCC	Supply voltage to ground	-0.5 to 4.6	V
VIO	DC input output voltage	-0.5 to 4.6	V
VIC	DC control input voltage	-0.5 to 4.6	V
I	DC output current(1)	120	mA
O
PD	Power dissipation	0.5	W
Tstg	Storage temperature	-65 to 150	°C
TL	Lead temperature (10 sec)	300	°C
1. If VIO x IO does not exceed the maximum limit of PD.
Recommended operating conditions

Table 5.	Recommended operating conditions
Symbol	Parameter			Value		Unit
			Min	Typ	Max
VCC	Supply voltage to ground		3	–	3.6	V
VIC	DC control input voltage (SEL)		0	–	5	V
VIO	DC input/output voltage		0	–	VCC	V
TA	Operating temperature		-40	–	85	°C

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