1

®

FN6261.0

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

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ISL59446

500MHz Triple 4:1 Gain-of-2, Multiplexing

Amplifier

The ISL59446 is a triple channel 4:1 multiplexer featuring

integrated amplifiers with a fixed gain of 2, high slew-rate

and excellent bandwidth for video switching. The device

features a three-state output (HIZ), which allows the outputs

of multiple devices to be tied together. A power-down mode

(ENABLE) is included to turn off un-needed circuitry in power

sensitive applications. When the ENABLE pin is pulled high,

the part enters a power-down mode and consumes just

14mW.

Pinout

Features

• 510MHz bandwidth into 150

Ω

• ±1600V/µs slew rate

• High impedance buffered inputs

• Internally set gain-of-2

• High speed three-state outputs (HIZ)

• Power-down mode (ENABLE)

• ±5V operation

• Supply current 11mA/ch

• Pb-free plus anneal available (RoHS compliant)

Applications

• HDTV/DTV analog inputs

• Video projectors

• Computer monitors

• Set-top boxes

• Security video

• Broadcast video equipment

Functional Diagram (each channel)

Ordering Information

PART NUMBER

(Note)

PART

MARKING

TAPE &

REEL

PACKAGE

(Pb-Free)

PKG.

DWG. #

ISL59446IRZ

IRZ

-

32 Ld QFN

L32.5x6A

ISL59446IRZ-T7 IRZ

7”

32 Ld QFN

L32.5x6A

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.

THERMAL

PAD

25

24

23

22

21

20

19

1

2

3

4

5

6

7

IN1A

NIC

IN1B

NIC

IN1C

GNDB

IN2A

ENABLE

NIC

V+

OUTA

V-

OUTB

OUTC

8

9

18

17

S0

S1

NIC

IN2B

THERMAL PAD INTERNALLY CONNECTED TO V-. PAD MUST BE

TIED TO V-

NIC = NO INTERNAL CONNECTION

x2

x2

x2

TABLE 1. CHANNEL SELECT LOGIC TABLE ISL59446

S1

S0

ENABLE

HIZ

OUTPUT

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

DECODE

IN0(A, B, C)

IN1(A, B, C)

IN2(A, B, C)

IN3(A, B, C)

S0

S1

EN0

EN1

EN3

EN2

OUT

HIZ

ENABLE

AMPLIFIER BIAS

+

-

Data Sheet

May 19, 2006