Datasheet GX4314LCTC, GX4314LCKC, GX4314LCKB, GX4314LCDB Datasheet (Gennum Corporation)

GX4314L Low Power, Wideband

4 x 1 Video Multiplexer

DATA SHEET

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

FUNCTIONAL BLOCK DIAGRAM

IN 0

IN 1

IN 2

IN 3

X

X

X

X

X

OUTPUT

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 µA. This feature

allows the use of many devices in high density situations
without excessive power dissipation.

2 TO 4 DECODER LOGIC

A0

A1

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

Revision Date: February 1994

CHIP

SELECT

CS

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

GX4314LCKB 14 pin SOIC 0

GX4314LCKC 16 pin SOIC 0

o

C to 70oC

o

C to 70oC

o

C to 70oC

GX4314LCTC Tape16 pin SOIC 0oC to 70oC

Document No. 520 - 54 - 2

GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. [phone] fax: [phone]

Gennum Japan Corporation:C-101 Miyamae Village, 2-10-42 Miyamae, Suginami-ku Tokyo 168-0081, Japan tel. [phone] fax: [phone]

ABSOLUTE MAXIMUM RATINGS

PIN CONNECTIONS

Parameter Value

Supply Voltage ±13.5V
Operating Temperature Range 0°C ≤ TA ≤ 70° C
Storage Temperature Range -65°C ≤ T

≤ 150° C

S

Lead Temperature (Soldering, 10 Sec) 260° C

Analog Input Voltage (VEE - 1.4) or -7.5<VA< (Vcc+ 0.3)

or ( VEE+ 15) V

Logic Input Voltage -0.5V ≤ VL ≤ +5.5V

ELECTRICAL CHARACTERISTICS

V

= ±8 V DC, 0°C ≤ TA ≤ 70°C, RL = 10kΩ, C

S

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage ±V

DC I

␣ SUPPLY Supply Current

Analog Output Voltage Swing V

STATIC Analog Input Bias Current I

Output Offset Voltage V
Output Offset Voltage Drift ∆V

Chip Enable Time t

LOGIC Chip Disable Time t

␣ Logic Input Thresholds V

Logic Input Current I

+

-

I

+

I

-

I

BIAS

ON

OFF

V

L

S

OUT

OS

OS

IH

IL

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 CL = 0 pF - 200 - MHz

Frequency Response At -1 dB flattened, R

␣ DYNAMIC

Input Resistance R

Input Capacitance C

Output Resistance R

Output Capacitance C

IN

IN

OUT

OUT

Differential Gain dg At 3.58 MHz - - 0.03 %

Differential Phase dp At 3.58 MHz - - 0.02 deg

All Hostile Crosstalk XTLKAH30 MHz R

Chip Disabled Crosstalk XTLKCDAt 100 MHz - 80 - dB

GX4314L

IN 0

GND

IN 1

GND

IN 2

GND

IN 3

14 PIN DIP &

14 PIN NARROW

IN 0

V

CC

GND

A0

IN 1

A1

GND

CS

IN 2

OUT

GND

NC

IN 3

V

EE

NC

SOIC

= 30 pF, unless otherwise shown

L

16 PIN WIDE SOIC

V

CC

NC

A0

A1

CS

OUT

NC

V

EE

Operating Range ±4.5 - ±11 V

CS = 0 - 12 15 mA

CS = 0 - 12 15 mA
CS = 1 - 270 350 µA

CS = 1 - 350 600 µA

Extremes before clipping occurs -2.4 - +3.6 V

-5 - µA

T

= 25°C -10 -3 +4 mV

A

-1560µV/°C

Enable input to appearance of signal - 350 500 ns
Enable input to disappearance 0.6 1.0 - µs

of signal at output.
V

= 1 2.0 - - V

IH

V

= 0 - - 0.8 V

IL

-- 4 µA

= 27Ω 100 - - MHz

S

Chip enabled 1.0 - - MΩ

Chip enabled - 1.5 - pF
Chip enabled - 18 - Ω

Chip enabled - - 5 pF

= 10Ω 70 - - dB

IN

520 - 54 - 2

Slew Rate +SR VIN = 1V p-p (C

-SR VIN =1V p-p (C

Gain Spread at 30 MHz ∆A

Crosspoint Scatter R

V

= 75 Ω T

S

ƒ = 3.58 MHz 0oC< TA< 70

2

= 10 pF) 600 900 - V/µs

L

= 10 pF) 225 300 - V/µs

L

- - ±0.05 dB

o

= 25

C- - ±0.15 deg

A

o

C- - ±0.25 deg

TYPICAL PERFORMANCE CURVES FOR GX4314L

(V

= ±5V DC, TA ≤ 25°C, C

S

= 30 pF, unless otherwise shown.)

L

0.2

R

0.1

0.0

-0.1

-0.2

-0.3

-0.4

GAIN (dB)

-0.5

-0.6

-0.7

-0.8
1 10 80

C

=27Ω

S

=30pF

L

FREQUENCY (MHz)

Fig. 1 Flattened Frequency Response

2.0

1.9

1.8

1.7

1.6

1.5

1.4

1.3

CAPACITANCE (pF)

1.2

1.1

1.0
1 10 100 200

DISABLED

ENABLED

CL=0pF

FREQUENCY (MHz)

Fig. 3 Input Capacitance

-20

-40

-60

R

=75Ω

IN

-80

-100

ISOLATION & XTALK (dB)

-120
1 10 100

R

=10Ω

IN

FREQUENCY (MHz)

Fig. 2 All Hostile Crosstalk & Isolation

4.5

4.4

4.3

4.2

4.1

4.0

3.9

3.8

CAPACITANCE (pF)

3.7

3.6

3.5

-1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0

V

=±11.5V

S

V

S

=±4.5V

BIAS VOLTAGE (V)

Fig. 4 Output Capacitance

CHIP OFF ­ISOLATION
R

=10Ω

L

0.030

0.025

0.020

0.015

0.010

0.005

dg ( % ), dp ( deg )

0.000

-0.005

-0.010
1 3 5 10

dg

dp

FREQUENCY (MHz)

Fig. 5 Differential Gain & Phase

VIDEO IN 0

VIDEO IN 1

VIDEO IN 2

VIDEO IN 3

3

GX4314 L

1

75

75

75

75

All resistors in ohms. all capacitors
in microfarads unless otherwise stated.

2

3

4

5
6

7

14

+8V

13

12

11

10

9

8

-8V

Fig. 6 Test Circuit

NC

0.1

0.1

10k

A0

A1

CS

4

CLC110

0.1

0.1

+5V

VIDEO
OUT

1

8

5

-5V

520 - 54 - 2

VIDEO INPUTS

GX4314L SWITCHES

0.1

+5V

BINARY ADDRESS

DECODER

V 0

V 1

V 2

V 3

V 4

V 5

V 6

V 7

V 8

V 9

V 10

V 11

1

IN 0

2

GND

3

IN 1

4

GND

5

IN 2

6

GND

7

IN 3

75

75

75

75

75

75

75

75

75

75

75

75

0.1

1

IN 0

2

GND

3

IN 1

4

GND

5

IN 2

6

GND

7

IN 3

0.1

1

IN 0

2

GND

3

IN 1

4

GND

5

IN 2

6

GND

7

IN 3

0.1

0.1

0.1

0.1

+V

A 0
A 1

CS

OUT

NC

-V

+V

A 0

A 1

CS

OUT

NC

-V

+V
A 0

A 1

CS

OUT

NC

14
13

12
11

10

9
8

4

-5V

+5V

14
13

12

11
10

9
8

330

-5V

+5V

14

13

12
11

10

9

8

-V

2-10pF

300

500

100

1

5
6

7

74HC139

8

2

16

+5V

3

7

+

2

6

4

-

250

A 0
A 1

3

A 2

2

A 3

1

ENABLE

+5V

0.1

75

VIDEO
OUTPUT

0.1

0.1

-5V

-5V

+5V

CURRENT- FEEDBACK

OPAMP

1

V 12

V 13

V 14

V 15

75

75

75

75

IN 0

2

GND

3

IN 1

4

GND

5

IN 2

6

GND

7

IN 3

Fig. 7 16 x 1 Video Multiplexer Circuit

CAUTION

ELECTROSTATIC

SENSITIVE DEVICES

DO NOT OPEN PACKAGES OR HANDLE

EXCEPT AT A STATIC-FREE WORKSTATION

Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement.

520 - 54 - 2

0.1

+V

A 0
A 1

CS

OUT

NC

14

13

12
11

10
9
8

-V

All resistors in ohms. all capacitors

-5V

in microfarads unless otherwise stated.

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.

© Copyright June 1992 Gennum Corporation. All rights reserved. Printed in Canada.

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