HA4344B Datasheet, PDF (1/4 Pages) Intersil Corporation – 350MHz, 4 x 1 Video Crosspoint Switch with Synchronous Controls

HA4344B
June 1998
350MHz, 4 x 1 Video Crosspoint Switch
with Synchronous Controls
Features
Description
• Low Power Dissipation . . . . . . . . . . . . . . . . . . . 105mW
• Symmetrical Slew Rates . . . . . . . . . . . . . . . . . 1400V/µs
• 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
• Latched Control Lines for Synchronous Switching
Applications
• Professional Video Switching and Routing
• RGB Video Distribution Systems
• Computer Graphics
• RF Switching and Routing
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.
Ordering Information
TEMP.
PART NUMBER RANGE (^oC)
PACKAGE
PKG.
NO.
HA4344BCB
0 to 70 16 Ld SOIC
M16.15
HA4344BCB96
0 to 70
16 Ld SOIC Tape M16.15
and Reel
Pinout
HA4344B (SOIC)
TOP VIEW
IN0 1
GND 2
IN1 3
GND 4
IN2 5
GND 6
IN3 7
GND 8
16 V+
15 A0
14 A1
13 CS
12 OUT
11 CK2
10 CK1
9 V-
Functional Diagram
A0
A1 DECODE
CS
CK1
CK2
100kΩ
EN0
EN1
D_L Q
C
D_L Q
C
EN2 _{DL Q}
C
EN3 _{DL Q}
C
100kΩ
D_L Q
C
D_L Q ^IN0
C
IN1
IN2
D_L Q
C
IN3
D_L Q
C
OUT
Timing Diagram
CK1
CK2
A0, A1, CS CHX CHY CHZ CHX CHZ
OUT
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 © Intersil Corporation 1999
1
File Number 3956.2