1

Dual, 500MHz Triple, Multiplexing Amplifiers

ISL59482

The ISL59482 contains two independent fixed gain of 2 triple

4:1 MUX amplifiers that feature high slew rate and excellent

bandwidth for RGB video switching. Each RGB 4:1 MUX

contains binary coded, channel select logic inputs (S0, S1),

and separate logic inputs for High Impedance Output (HIZ) and

power-down (EN) modes. The HIZ state presents a high

impedance at the output so that both RGB MUX outputs can be

wired together to form an 8:1 RGB MUX amplifier or, they can

be used in R-R, G-G, and B-B pairs to form a 4:1 differential

input/output MUX. Separate power-down mode controls (EN1,

EN2,) are included to turn off unneeded circuitry in power

sensitive applications. With both EN pins pulled high, the

ISL59482 enters a standby power mode consuming just

34mW.

Features

• Dual, triple 4:1 multiplexers for RGB

• 520MHz bandwidth into 500Ω load

• ±1600 V/µs slew rate

• Externally configurable for various video MUX circuits

including:

- 8:1 RGB MUX

- Two separate 4:1 RGB MUX

- 4:1 differential RGB video MUX

• Internally fixed gain-of-2

• High impedance outputs (HIZ)

• Power-down mode (EN)

• ±5V operation

• Supply current 16mA/Ch maximum

• Pb-free (RoHS compliant)

Applications

• HDTV/DTV analog inputs

• Video projectors, computer monitors

•Set-top boxes

•Security video

• Broadcast video equipment

TABLE 1. CHANNEL SELECT LOGIC TABLE ISL59482

S1-1, 2

S0-1, 2

EN1, 2

HIZ1, 2

OUTPUT1, 2

0

0

0

0

IN0 (A, B, C)

0

1

0

0

IN1 (A, B, C)

1

0

0

0

IN2 (A, B, C)

1

1

0

0

IN3 (A, B, C)

X

X

1

X

Power-down

XX

0

1

High Z

DECODE1

IN0(A1, B1, C1)

IN1(A1, B1, C1)

IN2(A1, B1, C1)

IN3(A1, B1, C1)

S0-1

S1-1

EN0-1

EN3-1

EN2-1

HIZ1

EN1

AMPLIFIER1 BIAS

EN1-1

DECODE2

IN0(A2, B2, C2)

IN1(A2, B2, C2)

IN2(A2, B2, C2)

IN3(A2, B2, C2)

S0-2

S1-2

EN0-2

EN3-2

EN2-2

HIZ2

EN2

AMPLIFIER2 BIAS

EN1-2

OUT(A1, B1, C1)

OUT(A2, B2, C2)

+

-

+

-

FIGURE 1. ISL59482 FUNCTIONAL DIAGRAM

August 8, 2014

FN6209.4

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

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All other trademarks mentioned are the property of their respective owners.