FN3956 Rev 4.00

Page 1 of 4

June 1, 2006

FN3956

Rev 4.00

June 1, 2006

HA4344B

350MHz, 4x1 Video Crosspoint Switch with Synchronous Controls

DATASHEET

The HA4344B is a very wide bandwidth 4x1 crosspoint switch

ideal for professional video switching, HDTV, computer

display routing, and other high performance applications. This

circuit features very low power dissipation, excellent

differential gain and phase, high off isolation, symmetric slew

rates, fast switching, and latched control signals. When

disabled, the output is switched to a high impedance state,

making the HA4344B ideal for matrix routers.

The latched control signals allow for synchronized channel

switching. When CK1 is low, the master control latch loads

the next switching address (A0, A1, CS), while the closed

(assuming CK2 is the inverse of CK1) slave control latch

maintains the crosspoint in its current state. CK2 switching

low closes the master latch (with previous assumption),

loads the now open slave latch, and switches the crosspoint

to the newly selected channel. Channel selection is

asynchronous (changes with any control signal change) if

both CK1 and CK2 are low.

Features

• Low Power Dissipation. . . . . . . . . . . . . . . . . . . . . .105mW

• Symmetrical Slew Rates . . . . . . . . . . . . . . . . . . 1400V/

s

• 0.1dB Gain Flatness. . . . . . . . . . . . . . . . . . . . . . . 100MHz

• -3dB Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . 350MHz

• Off Isolation (100MHz) . . . . . . . . . . . . . . . . . . . . . . . .70dB

• Crosstalk Rejection (30MHz) . . . . . . . . . . . . . . . . . . .80dB

• Differential Gain and Phase . . . . . . . . . . . . . . 0.01%/0.01°

• High ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . .>2000V

• TTL Compatible Control Signals

• Latched Control Lines for Synchronous Switching

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• Professional Video Switching and Routing

• RGB Video Distribution Systems

• Computer Graphics

• RF Switching and Routing

Pinout

HA4344B (SOIC)

TOP VIEW

Ordering Information

PART

NUMBER

PART

MARKING

TEMP. RANGE

(°C)

PACKAGE

PKG.

DWG. #

HA4344BCB

HA4344BCB

0 to 70

16 Ld SOIC M16.15

HA4344BCBZ

(Note)

4344BCBZ

0 to 70

16 Ld SOIC

(Pb-free)

M16.15

HA4344BCBZ96

(Note)

4344BCBZ

0 to 70

16 Ld SOIC

Tape & Reel

(Pb-free)

M16.15

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.

14

15

16

9

13

12

11

10

1

2

3

4

5

7

6

8

IN0

GND

IN1

GND

IN2

GND

GND

IN3

V+

A1

CS

OUT

CK2

CK1

V-

A0

Functional Diagram

Timing Diagram

OUT

DECODE

EN0

EN1

EN2

EN3

IN0

IN1

IN2

IN3

C

C

C

C

CK1

CK2

A0

A1

CS

C

C

C

C

100k



100k



A0, A1, CS

OUT

CHX

CHY

CHZ

CHX

CHX

CHY

CHX

CHZ

CHZ

CK1

CK2

NOT RECOMMENDED FOR NEW DESIGNS

NO RECOMMENDED REPLACEMENT

contact our Technical Support Center at

1-888-INTERSIL or www.intersil.com/tsc