HA4344B
June 1998
350MHz, 4 x 1 Video Crosspoint Switch
with Synchronous Controls
Description
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-
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.
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.
Features
鈥?Low Power Dissipation . . . . . . . . . . . . . . . . . . . 105mW
鈥?Symmetrical Slew Rates . . . . . . . . . . . . . . . . . 1400V/碌s
鈥?0.1dB Gain Flatness. . . . . . . . . . . . . . . . . . . . . . 100MHz
鈥?-3dB Bandwidth . . . . . . . . . . . . . . . . . . . . . . . . . 350MHz
鈥?Off Isolation (100MHz) . . . . . . . . . . . . . . . . . . . . . . 70dB
鈥?Crosstalk Rejection (30MHz). . . . . . . . . . . . . . . . . 80dB
鈥?Differential Gain and Phase . . . . . 0.01%/0.01Degrees
鈥?High ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . >2000V
鈥?TTL Compatible Control Signals
鈥?Latched Control Lines for Synchronous Switching
Applications
鈥?Professional Video Switching and Routing
鈥?RGB Video Distribution Systems
鈥?Computer Graphics
鈥?RF Switching and Routing
Ordering Information
PART NUMBER
HA4344BCB
HA4344BCB96
TEMP.
RANGE (
o
C)
0 to 70
0 to 70
PACKAGE
16 Ld SOIC
16 Ld SOIC Tape
and Reel
PKG.
NO.
M16.15
M16.15
Pinout
HA4344B (SOIC)
TOP VIEW
IN0
GND
IN1
GND
IN2
GND
IN3
GND
1
2
3
4
5
6
7
8
16 V+
15 A0
14 A1
13 CS
Functional Diagram
EN0
D
L
Q
C
D
L
Q
C
D
L
Q
C
D
L
Q
C
D
L
Q
C
D
L
Q
C
D
L
Q
C
D
L
Q
C
IN0
IN1
IN2
IN3
OUT
EN1
A0
A1
CS
EN3
DECODE
EN2
12 OUT
11 CK2
10 CK1
9 V-
CK1
CK2
100k鈩?/div>
100k鈩?/div>
Timing Diagram
CK1
CK2
A0, A1, CS
OUT
CHX
CHY
CHZ
CHX
CHZ
CHX
CHY
CHX
CHZ
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright 漏 Intersil Corporation 1999
File Number
3956.2
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