DATA SHEET
FEATURES
low differential phase and gain
wide bandwidth, 100 MHz at -1 dB (Flattened)
small switching transient
±
4.5 to
±
11 volts supplies
FUNCTIONAL BLOCK DIAGRAM
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,
very high off-isolation in the disabled state and fully buffered
unilateral signal path. Make-before-break switching assures
virtually glitch-free switching.
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.
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.
The wideband GX4314 is pin for pin compatible with the
high performance GX414, extending the flat frequency
response characteristics from 50 to 100 MHz.
APPLICATIONS
HDTV
Very high quality video switching
Very high density video switching
Computer graphics
PCM / data routing
Part Number Package Type Temperature Range
GX4314 - CDB
14 pin PDIP
0 to 70
o
C
GX4314 - CKB
14 pin SOIC
0 to 70
o
C
ORDERING INFORMATION
TRUTH TABLE
X = DON'T CARE
0 0 0 IN 0
0 0 1 IN 1
0 1 0 IN 2
0 1 1 IN 3
1 X X HI - Z
CS A1 A0 OUTPUT
Document No. 13422 - 5
CAUTION
ELECTROSTATIC
SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE WORKSTATION
AVAILABLE PACKAGING
14 pin PDIP
14 pin SOIC
GENNUM CORPORATION PO. 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
GX4314 Wideband, Monolithic
4x1 Video Multiplexer
IN 0
IN 1
IN 2
IN 3
2 TO 4 DECODER
LOGIC
OUTPUT
CHIP
SELECT
A1
A0
CS
GX4314
X
X
X
X
X