GX4314 Wideband, Monolithic
4x1 Video Multiplexer
DATA SHEET
FEATURES
CIRCUIT DESCRIPTION
The GX4314 is a wideband video multiplexer implemented
in bipolar technology. This device is characterized by
excellent differential phase and gain in the enabled state,
veryhigh off-isolation in the disabled state and fully buffered
unilateralsignalpath. Make-before-break switchingassures
virtually glitch-free switching.
• low differential phase and gain
• wide bandwidth, 100 MHz at -1 dB (Flattened)
• small switching transient
•
4.5 to 11 volts supplies
For use in NxM routing matrices, the GX4314 features a
very high, nearly constant input impedance coupled with
high output impedance in the disabled state. This allows
multiple devices to be paralleled at the inputs and outputs
without additional circuitry.
FUNCTIONAL BLOCK DIAGRAM
Logic inputs are TTL and 5V CMOS compatible, providing
address and chip select functions. The operation of the
devices is described in the Truth Table below.
X
IN 0
X
IN 1
X
The wideband GX4314 is pin for pin compatible with the
high performance GX414, extending the flat frequency
response characteristics from 50 to 100 MHz.
OUTPUT
X
IN 2
IN 3
X
2 TO 4 DECODER
LOGIC
CHIP
SELECT
APPLICATIONS
• HDTV
A1
CS
A0
• Very high quality video switching
• Very high density video switching
• Computer graphics
GX4314
• PCM / data routing
TRUTH TABLE
CS A1 A0 OUTPUT
ORDERING INFORMATION
0
0
0
0
1
0
0
1
1
X
0
1
0
1
X
IN 0
IN 1
IN 2
IN 3
HI - Z
Part Number
Package Type
Temperature Range
o
GX4314 - CDB
GX4314 - CKB
14 pin PDIP
14 pin SOIC
0 to 70 C
o
X = DON'T CARE
0 to 70 C
AVAILABLE PACKAGING
14 pin PDIP
14 pin SOIC
CAUTION
ELECTROSTATIC
SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE WORKSTATION
Document No. 13422 - 5
GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-2055
Japan Branch: B-201 Miyamae Village, 2-10-42 Miyamae, Suginami-ku, Tokyo 168, Japan tel. (03) 3247-8838 fax (03) 3247-8839