Gennum Corporation GX214-ACKC, GX214-ACKB, GX214-ACDB Datasheet
GX214A Monolithic 4x1
Video Multiplexer
DATA SHEET
FEATURES
• low cost
• differential gain at 3.58 MHz, 0.05% max.
• differential phase at 3.58 MHz, 0.05 deg. max.
• off-isolation better than 90 dB at 10 MHz
• all hostile crosstalk at 3.58 MHz, 75 dB typ. (R
• make-before-break switching
FUNCTIONAL BLOCK DIAGRAM
IN 0
IN 1
IN 2
IN 3
X
X
X
X
A0
A1
2 TO 4 DECODER
LOGIC
CHIP
SELECT
TRUTH TABLE
CS A1 A0 OUTPUT
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
X = DON'T CARE
ORDERING INFORMATION
= 75 Ω)
IN
OUTPUT
CS
CIRCUIT DESCRIPTION
The GX214A is a low cost 4x1 video multiplexer containing
four analog video switches and a 2 to 4 decoder. A Chip
Select input allows paralleled GX214As to be operated in
a switching matrix.
The GX214A represents a fully buffered, unilateral transmission
path when enabled. When disabled, the output is high
impedance.
The device operates from ±7.5 V to ±9.5 V supplies with
TTL and 5 V CMOS compatible input logic levels.
APPLICATIONS
• CATV and CCTV systems
• low cost video routing
Pin 1
14 PIN DIP
Pin 1
7
14 PIN SOIC
14
8
14
VCC
AO
A1
CS
OUT
LOGIC GND
V
8
EE
VCC
AO
A1
CS
OUT
LOGIC GND
V
EE
SIG GND
SIG GND
SIG GND
IN 0
SIG GND
IN 1
SIG GND
IN 2
SIG GND
IN 3
IN 0
IN 1
IN 2
IN 3
7
PIN CONNECTION
PIN CONNECTION
Part Number Package Type Temperature Range
GX214 - ACDB 14 Pin DIP 0° to 70°C
GX214 - ACKC 16 Pin SOIC 0° to 70°C
GX214 - ACKB 14 Pin SOIC 0° to 70°C
IN 0
SIG GND
IN 1
SIG GND
IN 2
SIG GND
IN 3
NC
Pin 1
8 9
PIN CONNECTION
16 PIN SOIC
16
V
CC
NC
AO
A1
CS
OUT
LOGIC GND
V
EE
Document No. 520 - 5 - 1
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
ABSOLUTE MAXIMUM RATINGS
Parameter Value
Supply Voltage ±10.0 V
Operating Temperature Range 0 °C ≤ TA ≤ 70 °C
Storage Temperature Range -65 °C ≤ TS ≤ 150 °C
Parameter Value
Lead Temperature (Soldering, 10 Sec) 260 °C
Analog Input Voltage -4 V ≤ VIN ≤ VCC+0.3 V
Logic Input Voltage 0 V ≤ VL ≤ 5.5 V
NOTE: A short from output to ground or either supply will destroy the device.
For R
ELECTRICAL CHARACTERISTICS
use a 2.67 kΩ 1%, 1/4 W resistor.
EXT
VS = ±8 V DC, 0°C < TA < 70 °C, RL = 2.67 kΩ to VEE, CL = 30pF IL = 3mA
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage ± V
S
7.5 8.0 9.5 V
DC I+ Chip selected (CS=0) - 14 20 mA
SUPPLY Chip not selected (CS=1) - 0.5 0.85 mA
Supply Current
not including
I
L
Analog Output V
I- Chip selected (CS=0) - 13 18 mA
Chip not selected (CS=1) - 0.58 0.88 mA
OUT
Extremes before +5.0 V
Voltage Swing clipping occurs - - -1.2
STATIC Analog Input Bias I
IN
-25-µA
Current
Output Offset Voltage V
OS
75Ω resistor on each +5 -30 -70 mV
input to ground
Turn-On Time t
ON
Control input to appearance - 250 400 ns
of signal at output.
Turn-Off Time t
OFF
Control input to disappear- 500 750 - ns
ance of signal at output.
LOGIC Logic Input V
Thresholds V
Logic Input I
IH
IL
BIAS
1 2.4 - - V
0 - - 0.6 V
Chip Selected A0,A1 = 1 - - 1 nA
Bias Current Chip Selected A0,A1 = 0 - - 2 µ A
Insertion Loss I.L. 1V p-p sine or sq. wave 0.05 0.08 0.11 dB
at 100 kHz
Bandwidth (-3dB) B.W. 65 85 - MHz
Input Resistance R
DYNAMIC Input Capacitance C
IN
IN
Chip selected (CS = 0) 900 - - kΩ
Chip selected (CS = 0) - 2.0 - pF
Chip not selected (CS=1) - 2.2 - pF
Output Resistance R
Output Capacitance C
OUT
OUT
Chip selected (CS=0) - 14 - Ω
Chip not selected (CS=1) - 12 - pF
Differential Gain dg at 3.58 MHz - - 0.05 %
Differential Phase dp VIN = 40 IRE - - 0.05 deg.
Sweep on 3 inputs 1V p-p
All Hostile Crosstalk X
Chip Disabled Crosstalk X
520 - 5 - 1 2
TALK(AH)
TALK(CD)
4th input has 75 Ω resistor 72 75 - dB
to gnd. ƒ = 10 MHz
One xpt on output to ground 90 100 - dB
ƒ = 10 MHz
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