HA457 Datasheet, PDF (1/14 Pages) Intersil Corporation – 95MHz, Low Power, AV = 2, 8 x 8 Video Crosspoint Switch

Data Sheet
HA457
August 1999 File Number 4231.2
95MHz, Low Power, A_V = 2, 8 x 8 Video
Crosspoint Switch
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/µs), gain of two
buffer capable of driving 150Ω 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.
Pinouts
HA457 (MQFP)
TOP VIEW
Features
• Pin Compatible, Cable Driving Upgrade for HA456 and
MAX456
• Fully Buffered Inputs and Outputs (A_V = +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/µs
• Low Crosstalk at 10MHz . . . . . . . . . . . . . . . . . . . . -55dB
Applications
• Video Switching and Routing
• Security and Video Editing Systems
Ordering Information
TEMP.
PART NUMBER RANGE (^oC)
PACKAGE
HA457CN
0 to 70 44 Ld MQFP
HA457CM
0 to 70 44 Ld PLCC
PKG. NO.
Q44.10x10
N44.65
HA457 (PLCC)
TOP VIEW
A0
IN1
NC
IN2
DGND
NC
IN3
DGND
IN4
EDGE/LEVEL
IN5
144 ⁴³
42
41 40
39
38
37 36
35 34
33
2
32
3
31
4
30
5
29
6
28
7
27
8
26
9
25
10
24
11
23
12 13 14 15 16 17 18 19 20 21 22
OUT2
V-
OUT3
AGND
OUT4
NC
AGND
OUT5
AGND
OUT6
V+
A0
IN1
NC
IN2
DGND
NC
IN3
DGND
IN4
EDGE/LEVEL
IN5
6 5 4 3 2 1 44 43 42 41 40
7
39
8
38
9
37
10
36
11
35
12
34
13
33
14
32
15
31
16
30
17
29
18 19 20 21 22 23 24 25 26 27 28
OUT2
V-
OUT3
AGND
OUT4
NC
AGND
OUT5
AGND
OUT6
V+
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999