FN4231 Rev 2.00

Page 1 of 14

August 1999

FN4231

Rev 2.00

August 1999

HA457

95MHz, Low Power, AV = 2, 8 x 8 Video Crosspoint Switch

DATASHEET

The HA457 is an 8 x 8 video crosspoint switch suitable for

high performance video systems. Its high level of integration

significantly reduces component count, board space, and

cost. The crosspoint switch contains a digitally controlled

matrix of 64 fully buffered switches that connect eight video

input signals to any, or all, matrix outputs. Each matrix

output connects to an internal, high-speed (275V/

s), gain of

two buffer capable of driving 150

 to2.5V.

The HA457 will directly drive a double terminated video

cable with some degradation of differential gain and phase.

Applications demanding the best composite video

performance should drive the cable with a unity gain video

buffer, such as the HFA1412 quad buffer (see Figure 7).

This crosspoint’s three-state output capability makes it

feasible to parallel multiple HA457s and form larger switch

matrices.

Features

• Pin Compatible, Cable Driving Upgrade for HA456 and

MAX456

• Fully Buffered Inputs and Outputs (AV = +2)

• Routes Any Input Channel to Any Output Channel

• Switches Standard and High Resolution Video Signals

• Serial or Parallel Digital Interface

• Expandable for Larger Switch Matrices

• Wide Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . . . 95MHz

• High Slew Rate . . . . . . . . . . . . . . . . . . . . . . . . . . 275V/

s

• Low Crosstalk at 10MHz . . . . . . . . . . . . . . . . . . . . . -55dB

Applications

• Video Switching and Routing

• Security and Video Editing Systems

Pinouts

Ordering Information

PART NUMBER

TEMP.

RANGE (oC)

PACKAGE

PKG. NO.

HA457CN

0 to 70

44 Ld MQFP

Q44.10x10

HA457CM

0 to 70

44 Ld PLCC

N44.65

HA457 (MQFP)

TOP VIEW

HA457 (PLCC)

TOP VIEW

1

2

3

4

5

6

7

8

9

10

11

12 13 14 15 16 17

28

27

26

25

24

23

22

21

20

19

18

39 38 37 36 35 34

33

32

31

30

29

44 43 42 41 40

A0

IN1

NC

IN2

DGND

NC

IN3

DGND

IN4

EDGE/LEVEL

IN5

OUT2

V-

OUT3

AGND

OUT4

NC

AGND

OUT5

AGND

OUT6

V+

44 43 42 41 40

39

38

37

36

35

34

33

32

31

30

29

28

27

1

2

3

4

5

6

26

25

24

23

22

21

20

19

18

7

8

9

10

11

12

13

14

15

16

17

A0

IN1

NC

IN2

DGND

NC

IN3

DGND

IN4

EDGE/LEVEL

IN5

OUT2

V-

OUT3

AGND

OUT4

NC

AGND

OUT5

AGND

OUT6

V+