FX465 View Datasheet(PDF) - CML Microsystems Plc

Part Name

Description

Manufacturer

FX465

Extended code CTCSS encoder/decoder

CML Microsystems Plc 

Specification ......

Characteristics

See Note

Min.

Typ.

Max.

Unit

Audio Switch

Isolation

5

-

60.0

-

dB

Serial/Parallel Inputs

Parallel Set-Up Time (tSP)

Load/Latch Pulse Width (tL)

Serial Clock Pulse Width (t )

C

Serial Set-Up Time (tSS)

Serial Data Hold Time (tH)

Serial Enable Time (t1)

Serial Load/Latch Set-up Time (t )

2

Serial Clock Frequency

400

-

400

-

400

-

400

-

400

-

400

-

400

-

-

1.0

-

ns

-

ns

-

ns

-

ns

-

ns

-

ns

-

ns

-

MHz

Notes

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.

13.

14.

15.

16.

Refers to Rx/Tx, PTL, Decode Comparator Input, D0, D1, D2, D3, D4, D5 inputs.

All logic outputs.

Composite Signal Test condition.

Any programming tone and RL = 10kΩ. CL = 15pF.

With an input level of 0dB at 1.0kHz.

fO > 100Hz, (for 100Hz >fO >67Hz: t = (100/fO Hz) x 250ms).

Measured in a 30kHz bandwidth.

With an input level of -3.5dB at 1.0kHz

Per TIA/EIA-603.

Per TIA/EIA-603, device will not decode adjacent TIA/EIA-603 tones.

Tone output level is proportional to V .

DD

fO = 156.7Hz at -20dB.

Typically 12.5 tone cycles + 40ms

Typically 7 tone cycles + 90ms.

Max composite signal is 3.5dB with: Noise (band limited 6kHz Gaussian) -12dB to 1kHz test tone F

0

CTCSS tone -20dB ref to 1kHz test tone.

For maximum dynamic range, set audio level to 0dB, VDD x 150mVrms, using minimumVDD under

which system is intended to work. e.g. for a 2.7 to 3.3 volt system use 0dB equal to 405mVrms.

Package Outlines

The FX465 is available in the package styles outlined

below. Pin 1 identification marking is shown on the

relevant diagram and pins on all package styles number

anti-clockwise when viewed from the top.

FX465 D5 24-pin plastic S.S.O.P.

A

B

PIN 1

X

Y

H

J

PC

F

Handling Precautions

The FX465 is a CMOS LSI circuit which includes input

protection. However precautions should be taken to

prevent static discharges which may cause damage.

Z

E

L

T

DIM. MIN. TYP. MAX.

A 0.318 (8.07)

B 0.205 (5.20)

C 0.068 (1.73)

E 0.301 (7.65)

0.328 (8.33)

0.212 (5.38)

0.078 (1.99)

0.311 (7.90)

F

0.286 (7.15)

H 0.002 (0.05)

0.008 (0.21)

J 0.010 (0.25)

0.015 (0.38)

L 0.022 (0.55)

0.037 (0.95)

P

0.026 (0.65)

T 0.005 (0.13)

0.009 (0.22)

X

0°

8°

Y

7°

9°

Z

4°

10°

NOTE : All dimensions in inches (mm.)

Angles in degrees

Ordering Information

FX465 D5 24-pin plastic S.S.O.P. (D5)

CML does not assume any responsibility for the use of any circuitry described. No circuit patent licences are implied

and CML reserves the right at any time without notice to change the said circuitry.

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