TRUTH TABLE
CS
0
0
0
0
1
A1
0
0
1
1
X
A0
0
1
0
1
X
Output
Input 0
Input 1
Input 2
Input 3
High - Z
X = don't care
Document No. 520 - 54 - 2
GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-5946
Gennum Japan Corporation:C-101 Miyamae Village, 2-10-42 Miyamae, Suginami-ku Tokyo 168-0081, Japan tel. (03) 3334-7700 fax: (03) 3247-8939
DATA SHEET
GX4314L Low Power, Wideband
4 x 1 Video Multiplexer
DESCRIPTION
The GX4314L is a low power, wideband video multiplexer
implemented in bipolar technology. This device is characterized
by excellent differential gain and phase in the enabled
state, very high off-isolation in the disabled state and a
fully buffered, unilateral signal path.
Make-before-break switching assures virtually glitch-free
switching. The GX4314L 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 5 V CMOS compatible, providing
address and chip select functions. The operation of the
device is described in the Truth Table below.
The GX4314L offers pin for pin compatibility with Gennum's
other 4x1 multipliers such as GX414, GX414A and GX434
with greatly improved bandwidth and slew rate. Since the
GX4314L is capable of operation at
±
5 V supplies, system
power can be reduced.
Typically, the ON current is only 12 mA while the chip
disabled current drops to less than 260
μ
A. This feature
allows the use of many devices in high density situations
without excessive power dissipation.
FEATURES
low power; 12 mA ON current at
±
5 volts
low differential gain and phase
wide bandwidth; 100 MHz at -1 dB
±
4.5 to
±
11 volt power supplies
available in 14 pin PDIP as well as 14 and 16
pin SOIC packaging
identical functions and pin outs to GX4314 with lower
power
IN 0
IN 1
IN 2
IN 3
2 TO 4 DECODER LOGIC
CHIP
SELECT
OUTPUT
A0
A1
X
X
X
X
CS
X
FUNCTIONAL BLOCK DIAGRAM
APPLICATIONS
Multimedia
Computer graphics.
Very high density video switching.
PCM / data routing.
ORDERING INFORMATION
Part Number Package Type Temperature Range
GX4314LCDB
14 pin PDIP
0
o
C to 70
o
C
GX4314LCKB
14 pin SOIC
0
o
C to 70
o
C
GX4314LCKC
16 pin SOIC
0
o
C to 70
o
C
GX4314LCTC
Tape16 pin SOIC
0
o
C to 70
o
C
Revision Date: February 1994