GX4404 Datasheet, PDF (1/3 Pages) Gennum Corporation – GX4404 Wideband, Monolithic 4x1 Video Multiplexer

GX4404 Wideband, Monolithic
4x1 Video Multiplexer
2-DATA SHEET
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
FUNCTIONAL BLOCK DIAGRAM
TALLY OUTPUTS
T0
T1
T2
T3
IN 0
IN 1
IN 2
IN 3
X
X
X
X
2 TO 4 DECODER
A0
A1
PIN CONNECTIONS
X
OUTPUT
CHIP
SELECT
CS
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
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)
AVAILABLE PACKAGING
16 pin PDIP
16 pin SOIC
Tape 16 pin (N) SOIC
TRUTH TABLE
CS A1 A0
0 00
0 01
0 10
0 11
1 XX
OUT
IN 0
IN 1
IN 2
IN 3
HI - Z
TALLY O/Ps
T0 T1 T2 T3
ON * * *
* ON * *
* * ON *
* * * ON
* ***
X = DON'T CARE _* = OFF (high impedance)
ORDERING INFORMATION
Part Number
GX4404-CDC
GX4404-CKD
GX4404-CTD
Package Type Temperature Range
16 pin PDIP
0 to 70^oC
16 pin (N) SOIC
0 to 70^oC
Tape16 pin (N) SOIC 0 to 70^oC
Document No. 520 - 43 - 1
GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. [phone] fax: [phone]
Japan Branch: A-302 Miyamae Village, 2-10-42 Miyamae, Suginami-ku, Tokyo 168, Japan tel. [phone] fax [phone]