ICS853052AMT datasheet(7/14 Pages) IDT

Nome de Peças	ICS853052AMT

Descrição Electrónicos	DUAL LVCMOS/LVTTL-TO-DIFFERENTIAL 2.5V, 3.3V, 5V LVPECL MULTIPLEXER

PDF	14 Pages

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Fabricante Electrônico	IDT [Integrated Device Technology]

Página de início	http://www.idt.com

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IDT™ / ICS™ 2.5V, 3.3V, 5V LVPECL MULTIPLEXER

ICS853052AG REV. B OCTOBER 24, 2007

ICS853052

DUAL LVCMOS/LVTTL-TO-DIFFERENTIAL 2.5V, 3.3V, 5V LVPECL MULTIPLEXER

PRELIMINARY

APPLICATION INFORMATION

TERMINATION FOR 2.5V LVPECL OUTPUT

Figure 1A and Figure 1B show examples of termination for 2.5V

LVPECL driver. These terminations are equivalent to terminating

Ω to V

- 2V. For V

= 2.5V, the V

- 2V is very close to ground

level. The R3 in Figure 1B can be eliminated and the termination

is shown in Figure 1C.

FIGURE 1C. 2.5V LVPECL TERMINATION EXAMPLE

FIGURE 1B. 2.5V LVPECL DRIVER TERMINATION EXAMPLE

FIGURE 1A. 2.5V LVPECL DRIVER TERMINATION EXAMPLE

62.5

Zo = 50 Ohm

250

2.5V

2,5V LVPECL

Driv er

62.5

250

Zo = 50 Ohm

2.5V

VCC=2.5V

Zo = 50 Ohm

2,5V LVPECL

Driv er

VCC=2.5V

2.5V

2,5V LVPECL

Driv er

VCC=2.5V

2.5V

Zo = 50 Ohm

INPUTS:

DX INPUTS

For applications not requiring the use of a clock input, it can

be left floating. Though not required, but for additional

protection, a 1k

Ω resistor can be tied from the Dx input to

ground.

RECOMMENDATIONS FOR UNUSED INPUT PINS

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