0 0 0 IN 0 ON
*
*
*
0 0 1 IN 1
*
ON
*
*
0 1 0 IN 2
*
*
ON
*
0 1 1 IN 3
*
*
*
ON
1 X X HI - Z
*
*
*
*
ORDERING INFORMATION
Part Number Package Type Temperature Range
GX4404-CDC
16 pin PDIP
0 to 70
o
C
GX4404-CKD
16 pin (N) SOIC
0 to 70
o
C
GX4404-CTD
Tape16 pin (N) SOIC
0 to 70
o
C
TALLY O/Ps
X
X
X
X
X
A0
A1
CHIP
SELECT
2 TO 4 DECODER
OUTPUT
IN 0
IN 1
IN 2
IN 3
TALLY OUTPUTS
T 0
T 1
T 2
T 3
CS
FEATURES
low differential phase and gain
wide bandwidth, 200 MHz at -3 dB
small switching transient
4.5 to
5.5 volts supplies
individual TALLY outputs
2-
DATA SHEET
CIRCUIT DESCRIPTION
The GX4404 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. Fully buffered
unilateral signal paths ensure negligible output to input
feedback, while delivering minimal output switching transients
through make-before-break switching.
For use in NxM routing matrices, these devices feature 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.
The chip is disabled when a logic HIGH is applied to the CS
control pin. In this case, regardless of the ADDRESS data,
the output of the device assumes a high impedance state.
Individual PNP to V
CC
TALLY outputs provide positive
indication of crosspoint selection.
All logic inputs are TTL and 5V CMOS compatible. Supply
voltages can be between
4.5 to
5.5 volts.
APPLICATIONS
HDTV
Very high quality video switching
Very high density video switching
Computer graphics
PCM / data routing matrices
*
X = DON'T CARE
= OFF (high impedance)
CS A1 A0 OUT
T0
T1
T2
T3
GX4404 Wideband, Monolithic
4x1 Video Multiplexer
PIN CONNECTIONS
IN 0
GND
IN 1
T1
T2
IN 2
GND
IN 3
T0
V
CC
A0
A1
CS
OUT
V
EE
T3
16 PIN
`NARROW' SOIC
(& 16 PIN PDIP)
TRUTH TABLE
FUNCTIONAL BLOCK DIAGRAM
GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-5946
Japan Branch: A-302 Miyamae Village, 2-10-42 Miyamae, Suginami-ku, Tokyo 168, Japan tel. (03) 3334-7700 fax (03) 3247-8839
Document No. 520 - 43 - 1
AVAILABLE PACKAGING
16 pin PDIP
16 pin SOIC
Tape 16 pin (N) SOIC
520 - 43 - 1
2
Supply Voltage
V
S
Operating Range
4.5
-
5.5
V
DC
I
+
CS = 0
-
30
37
mA
SUPPLY
Supply Current
I
-
CS = 0
-
30
37
mA
I
+
CS = 1
-
220
300
A
I
-
CS = 1
-
220
380
A
Analog Output Voltage Swing
V
OUT
Extremes before clipping occurs
-2.4
-
2.6
V
STATIC
Analog Input Bias Current
I
BIAS
-
12
-
A
Output Offset Voltage
V
OS
T
A
= 25
C
-13
-4
7
mV
Output Offset Voltage Drift
V
OS
-
35
80
V/
C
Chip Enable Time
t
ON
Enable input to appearance of signal
-
200
400
ns
LOGIC
Chip Disable Time
t
OFF
Enable input to disappearance
0.6
1.2
-
s
of signal at output.
Logic Input Thresholds
V
IH
1
2.0
-
-
V
V
IL
0
-
-
0.8
V
Logic Input Current
I
L
-
-
4
A
TALLY Outputs
(V
CC
-V
TALLY
)
I
TALLY
= 1mA
70
150
300
mV
Insertion Loss
I.L.
1V p-p sine or sq. wave at 100 kHz
0.030
0.040
0.055
dB
Bandwidth (-3dB)
B.W.
small signal C
L
= 0 pF
-
300
-
MHz
Input Resistance
R
I
N
CS = 0, crosspoint on
0.5
-
-
M
DYNAMIC
Input Capacitance
C
IN
CS = 0, crosspoint on
-
1.5
-
pF
Output Resistance
R
OUT
CS = 0, crosspoint on
-
4
-
Output Capacitance
C
OUT
CS = 1, chip disabled
-
3.7
-
pF
Differential Gain
dg
= 3.58 MHz, V
IN
= 40
IRE
-
-
0.05
%
Differential Phase
dp
= 3.58 MHz, V
IN
= 40
IRE
-
-
0.04
deg
All Hostile Crosstalk
XTLK
AH
1Vp-p on 3 inputs 4 th input
has 10
resistor to gnd =30 MHz
-
70
-
dB
Chip Disabled Crosstalk
XTLK
CD
Enabled device on O/P =100 MHz
-
80
-
dB
Slew Rate
-SR
V
IN
= 3V p-p (C
L
= 0 pF)
250
-
-
V/
s
Gain Spread at 30 MHz
A
V
-
-
0.05
dB
Crosspoint Scatter
R
S
= 75
T
A
= 25
C
-
-
0.15
deg
= 3.58 MHz 0
C < T
A
< 70
C
-
-
0.25
deg
ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
(V
S
=
5V DC, 0
C
T
A
70
C, R
L
= 10k
, C
L
= 30 pF, unless otherwise shown.)
+SR V
IN
= 3V p-p (C
L
= 0 pF)
250
- - V/
s
PARAMETER
VALUE
Supply Voltage
7.5V
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
PARAMETER
VALUE
Analog Input Voltage
(V
EE
-1.4) < V
A
< (V
CC
+0.3)V
Logic Input Voltage
-0.5V
V
L
+5.5V
TALLY Output Current
2 mA
ABSOLUTE MAXIMUM RATINGS
3
520 - 43 - 1
GX4404
75
VIDEO IN 1
VIDEO IN 3
75
1
2
4
3
0.1
ADDRESS BIT 1
CHIP SELECT
6 dB
AMPLIFIER
TO L.E.D.
DRIVERS
6
5
7
15
14
-5V
9
8
10
12
13
+5V
0.1
11
ADDRESS BIT 0
VIDEO OUT
VIDEO IN 2
VIDEO IN 0
16
75
75
75
X
X
X
X
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 July 1991 Gennum Corporation. Revision Date: January 1993. All rights reserved. Printed in Canada.
3.0
2.5
2.0
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
GAIN (dB)
R
S
= 30
C
L
= 27 pF
Fig. 1 Flattened Frequency Response
Fig. 2 All Hostile Crosstalk & Isolation
1
3 5
10
FREQUENCY (MHz)
dg (%) dp (deg)
CAPACITANCE (pF)
dg
dp
C
L
= 0 pF
SW1,2 ENABLED
SW0,3 ENABLED
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
1
10 100 200
FREQUENCY (MHz)
R
S
= 75
R
S
= 10
Fig. 4 Input Capacitance
Fig. 3 Differential Gain & Phase
TYPICAL PERFORMANCE CURVES
1
10 30
100
FREQUENCY
10
30
100
300
FREQUENCY (MHz)
dB
CHIP OFF -
ISOLATION
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
R
L
= 10
0.05
0.04
0.03
0.02
0.01
0
All resistors in ohms, all capacitors in
F unless otherwise stated
CAUTION
ELECTROSTATIC
SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE WORKSTATION
Fig. 5 Test Circuit
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.
GX4404
PIN 16
390
L.E.D. DRIVER
(REPEAT FOR EACH
TALLY OUTPUT)
4.7k
+5V
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