TRUTH TABLE
CS
A1
A0
Output
0
0
0
Input 0
0
0
1
Input 1
0
1
0
Input 2
0
1
1
Input 3
1
X
X
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
520 - 54 - 2
2
Supply Voltage
±
V
S
Operating Range
±
4.5
-
±
11
V
DC
I
+
CS = 0
-
12
15
mA
SUPPLY
Supply Current
I
-
CS = 0
-
12
15
mA
I
+
CS = 1
-
270
350
µ
A
I
-
CS = 1
-
350
600
µ
A
Analog Output Voltage Swing
V
OUT
Extremes before clipping occurs
-2.4
-
+3.6
V
STATIC
Analog Input Bias Current
I
BIAS
-
5
-
µ
A
Output Offset Voltage
V
OS
T
A
= 25
°
C
-10
-3
+4
mV
Output Offset Voltage Drift
V
OS
-
15
60
µ
V/
°
C
Chip Enable Time
t
ON
Enable input to appearance of signal
-
350
500
ns
LOGIC
Chip Disable Time
t
OFF
Enable input to disappearance
0.6
1.0
-
µ
s
of signal at output.
Logic Input Thresholds
V
IH
V
IH
= 1
2.0
-
-
V
V
IL
V
IL
= 0
-
-
0.8
V
Logic Input Current
I
L
-
-
4
µ
A
Insertion Loss
I.L.
1V p-p sine or sq. wave at 100 kHz
0.035
0.047
0.060
dB
Bandwidth (-3dB)
B.W.
Small signal C
L
= 0 pF
-
200
-
MHz
Frequency Response
At -1 dB flattened, R
S
= 27
100
-
-
MHz
Input Resistance
R
IN
Chip enabled
1.0
-
-
M
DYNAMIC
Input Capacitance
C
IN
Chip enabled
-
1.5
-
pF
Output Resistance
R
OUT
Chip enabled
-
18
-
Output Capacitance
C
OUT
Chip enabled
-
-
5
pF
Differential Gain
dg
At 3.58 MHz
-
-
0.03
%
Differential Phase
dp
At 3.58 MHz
-
-
0.02
deg
All Hostile Crosstalk
XTLK
AH
30 MHz R
IN
= 10
70
-
-
dB
Chip Disabled Crosstalk
XTLK
CD
At 100 MHz
-
80
-
dB
Slew Rate
+SR
V
IN
= 1V p-p (C
L
= 10 pF)
600
900
-
V/
µ
s
-SR
V
IN
=1V p-p (C
L
= 10 pF)
225
300
-
V/
µ
s
Gain Spread at 30 MHz
A
V
-
-
±
0.05
dB
Crosspoint Scatter
R
S
= 75
T
A
= 25
o
C
-
-
±
0.15
deg
= 3.58 MHz 0
o
C< T
A
< 70
o
C
-
-
±
0.25
deg
Parameter
Value
Supply Voltage
±
13.5V
Operating Temperature Range
0
°
C
T
A
70
°
C
Storage Temperature Range
-65
°
C
T
S
150
°
C
Lead Temperature
(Soldering, 10 Sec)
260
°
C
Analog Input Voltage
(V
EE
- 1.4) or -7.5<V
A
< (V
cc
+ 0.3)
or ( V
EE
+ 15) V
Logic Input Voltage
-0.5V
V
L
+5.5V
ABSOLUTE MAXIMUM RATINGS
PIN CONNECTIONS
IN 0
GND
IN 1
GND
IN 2
GND
IN 3
NC
V
CC
NC
A0
A1
CS
OUT
NC
V
EE
IN 0
GND
IN 1
GND
IN 2
GND
IN 3
V
CC
A0
A1
CS
OUT
NC
V
EE
16 PIN WIDE SOIC
GX4314L
14 PIN DIP &
14 PIN NARROW
SOIC
ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
V
S
=
±
8 V DC, 0
°
C
T
A
70
°
C, R
L
= 10k
, C
L
= 30 pF, unless otherwise shown
3
520 - 54 - 2
ISOLATION & XTALK (dB)
GAIN (dB)
R
IN
=75
Fig. 2 All Hostile Crosstalk & Isolation
1
10
80
FREQUENCY (MHz)
1
10
100
FREQUENCY (MHz)
CAPACITANCE (pF)
CAPACITANCE (pF)
Fig. 3 Input Capacitance
-1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0
BIAS VOLTAGE (V)
R
S
=27
C
L
=30pF
Fig. 1 Flattened Frequency Response
1
10 100 200
FREQUENCY (MHz)
ENABLED
4.5
4.4
4.3
4.2
4.1
4.0
3.9
3.8
3.7
3.6
3.5
V
S
=
±
11.5V
Fig. 4 Output Capacitance
0.2
0.1
0.0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-20
-40
-60
-80
-100
-120
CHIP OFF -
ISOLATION
R
L
=10
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
dg ( % ), dp ( deg )
Fig. 5 Differential Gain & Phase
1
3 5
10
FREQUENCY (MHz)
dp
dg
0.030
0.025
0.020
0.015
0.010
0.005
0.000
-0.005
-0.010
Fig. 6 Test Circuit
R
IN
=10
DISABLED
TYPICAL PERFORMANCE CURVES FOR GX4314L
(V
S
=
±
5V DC, T
A
25
°
C, C
L
= 30 pF, unless otherwise shown.)
C
L
=0pF
V
S
=
±
4.5V
GX4314 L
1
2
3
5
6
7
VIDEO IN 1
VIDEO IN 3
VIDEO IN 2
VIDEO IN 0
75
75
75
75
4
10
9
14
8
A1
12
A0
13
10k
NC
4
CLC110
1
VIDEO
OUT
8
5
CS
11
+5V
0.1
-5V
0.1
-8V
0.1
0.1
+8V
All resistors in ohms. all capacitors
in microfarads unless otherwise stated.
520 - 54 - 2
4
BINARY ADDRESS
DECODER
VIDEO INPUTS
GX4314L SWITCHES
V 0
V 1
V 2
V 3
75
75
75
75
0.1
1
2
6
5
4
3
7
9
10
11
12
13
14
8
1
2
6
5
4
3
7
9
10
11
12
13
14
8
1
2
6
5
4
3
7
9
10
11
12
13
14
8
1
2
6
5
4
3
7
9
10
11
12
13
14
8
V 4
V 5
V 6
V 7
75
75
75
75
V 8
V 9
V 10
V 11
75
75
75
75
V 12
V 13
V 14
V 15
75
75
75
75
0.1
0.1
0.1
0.1
0.1
0.1
0.1
-5V
-5V
+5V
-5V
+5V
+5V
A 0
A 1
330
2-10pF
IN 0
IN 1
IN 2
IN 3
+V
A 0
A 1
CS
OUT
NC
-V
IN 0
IN 1
IN 2
IN 3
+V
A 0
A 1
CS
OUT
NC
-V
IN 0
GND
IN 2
IN 3
+V
A 0
A 1
OUT
NC
-V
CS
IN 0
IN 1
IN 2
IN 3
+V
A 0
A 1
CS
OUT
NC
-V
A 2
ENABLE
A 3
4
5
6
7
-5V
+5V
GND
GND
GND
GND
GND
GND
GND
GND
GND
2
3
1
1
2
74HC139
GND
GND
IN 1
+5V
0.1
8
16
+5V
0.1
-
+
3
2
4
7
-5V
0.1
75
500
6
250
300
100
CURRENT- FEEDBACK
OPAMP
VIDEO
OUTPUT
CAUTION
ELECTROSTATIC
SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE WORKSTATION
DOCUMENT
IDENTIFICATION
PRODUCT PROPOSAL
This data has been compiled for market investigation purposes
only, and does not constitute an offer for sale.
ADVANCE INFORMATION NOTE
This product is in development phase and specifications are
subject to change without notice. Gennum reserves the right to
remove the product at any time. Listing the product does not
constitute an offer for sale.
PRELIMINARY DATA SHEET
The product is in a preproduction phase and specifications are
subject to change without notice.
DATA SHEET
The product is in production. Gennum reserves the right to make
changes at any time to improve reliability, function or design, in
order to provide the best product possible.
Fig. 7 16 x 1 Video Multiplexer Circuit
All resistors in ohms. all capacitors
in microfarads unless otherwise stated.
Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement.
© Copyright June 1992 Gennum Corporation. All rights reserved. Printed in Canada.
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