1

®

FN6208.4

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

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ISL59481

Dual, 500MHz Triple, Multiplexing

Amplifiers

The ISL59481 contains two independent unity gain 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 unused circuitry

in power sensitive applications. With both EN pins pulled

high, the ISL59481 enters a standby power mode -

consuming just 36mW.

Features

• Dual, triple 4:1 multiplexers for RGB

• 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 set gain-of-1

• High impedance outputs (HIZ)

• Power-down mode (EN)

• ±5V operation

• ±870V/µs slew rate

• 500MHz bandwidth

• Supply current 16mA/CH

• Pb-free plus anneal (RoHS compliant)

Applications

• HDTV/DTV analog inputs

• Video projectors

• Computer monitors

• Set-top boxes

• Security video

• Broadcast video equipment

Related Literature

• Application Note AN1235 “ISL59481EVAL1 Evaluation

Board User’s Guide”

Ordering Information

PART NUMBER

(Note)

PART

MARKING

TAPE &

REEL

PACKAGE

(Pb-free)

PKG.

DWG. #

ISL59481IRZ

ISL59481 IRZ

-

48 Ld Exposed

Pad 7x7 QFN

L48.7x7B

ISL59481IRZ-T13 ISL59481 IRZ

13”

48 Ld Exposed

Pad 7x7 QFN

L48.7x7B

ISL59481EVAL1Z Evaluation PCB

NOTE: Intersil Pb-free plus anneal products employ special Pb-free

material sets; molding compounds/die attach materials and 100% matte

tin plate termination finish, which are RoHS compliant and compatible

with both SnPb and Pb-free soldering operations. Intersil Pb-free

products are MSL classified at Pb-free peak reflow temperatures that

meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

TABLE 1. CHANNEL SELECT LOGIC TABLE ISL59481

S1-1, 2

S0-1, 2

EN1, EN2

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

Data Sheet

May 18, 2007