HA4344B
350MHz, 4 x 1 Video Crosspoint Switch
with Synchronous Controls
June 1998
Features
Description
• Low Power Dissipation . . . . . . . . . . . . . . . . . . . 105mW The HA4344B is a very wide bandwidth 4 x 1 crosspoint
switch ideal for professional video switching, HDTV, com-
puter display routing, and other high performance applica-
• Symmetrical Slew Rates . . . . . . . . . . . . . . . . . 1400V/µs
tions. This circuit features very low power dissipation,
excellent differential gain and phase, high off isolation, sym-
metric 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.
• 0.1dB Gain Flatness. . . . . . . . . . . . . . . . . . . . . . 100MHz
• -3dB Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . 350MHz
• Off Isolation (100MHz) . . . . . . . . . . . . . . . . . . . . . . 70dB
• Crosstalk Rejection (30MHz). . . . . . . . . . . . . . . . . 80dB
• Differential Gain and Phase . . . . . 0.01%/0.01Degrees
• High ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . >2000V
• TTL Compatible Control Signals
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 (assum-
ing 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.
• Latched Control Lines for Synchronous Switching
Applications
• Professional Video Switching and Routing
• RGB Video Distribution Systems
• Computer Graphics
Ordering Information
TEMP.
PKG.
NO.
o
PART NUMBER RANGE ( C)
PACKAGE
16 Ld SOIC
HA4344BCB
0 to 70
0 to 70
M16.15
• RF Switching and Routing
HA4344BCB96
16 Ld SOIC Tape M16.15
and Reel
Pinout
Functional Diagram
HA4344B (SOIC)
EN0
D
C
Q
Q
D
C
Q
Q
L
L
L
TOP VIEW
IN0
EN1
D
C
D
C
L
IN0
GND
IN1
1
2
3
4
5
6
7
8
16 V+
A0
A1
CS
IN1
IN2
15 A0
OUT
DECODE
EN2
EN3
Q
Q
D
C
L
L
D
Q
Q
14 A1
L
C
GND
IN2
13 CS
12 OUT
11 CK2
10 CK1
IN3
D
C
D
C
L
CK1
CK2
GND
IN3
100kΩ
100kΩ
9
V-
GND
Timing Diagram
CK1
CK2
A0, A1, CS CHX
CHY
CHZ
CHY
CHX
CHZ
OUT
CHX
CHX CHZ
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
File Number 3956.2
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999
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