LC7385M 查看數據表（PDF） - SANYO -> Panasonic

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LC7385M

DTMF receiver

SANYO -> Panasonic 

LC7385, 7385M

AC Characteristics at Ta=25±2˚C, VDD=5V, VSS=0V, fOSC=3.579545MHz

Parameter

Symbol

Conditions

Valid input signal level

Twist accept limit

Frequency deviation accept limit

Frequency deviation accept limit

Third tone tolerance

Dial tone tolerance

Noise tolerance

Tone present detection time

Tone absent detection time

Tone duration accept

Tone duration regect

Interdigit pause accept

Interdigit pause reject

Propagation delay (St → Q)

Propagation delay (St → StD)

Output data set-up (Q → StD)

Output enable delay

Output disable delay

Clock frequency

Clock capacitive load

tDP

tDA

tREC

tREJ

tID

tDO

tPQ

tPSTD

tQSTD

tPTE

tPTD

fOSC

CXO

1, 2, 3, 5, 6, 9

2, 3, 6, 9, 11

2, 3, 5, 9

2, 3, 5

2, 3, 4, 5, 9, 10

2, 3, 4, 5, 8, 9, 10

2, 3, 4, 5, 7, 9, 10

See timing diagram.

Adjustable. See guard time adjustment.

TOE=5V, No load

TOE=5V, No load

TOE=5V, No load

RL=10k, CL=50pF

RL=10k, CL=50pF

OSC2

Conditions

1. dBm=decibels avove or below a reference power of 1mW into a 600Ω load.

2. All 16 DTMF tones.

3. 40ms DTMF tone duration and 40ms pause duration.

4. Nominal DTMF frequencies.

5. Both tones in composite signal have an equal amplitude.

6. Tone pair deviated by ±1.5% ±2Hz.

7. Bandwidth limited (0 to 3kHz) Gaussian noise.

8. 350Hz and 440Hz +2% dial tone frequencies.

9. Error rate better than 1 in 10,000.

10. Referenced to lowest level frequency component in DTMF signal.

11. Twist=ratio of high-frequency tone level to low-frequency tone level.

Single-Ended Input Configuration

Ratings

min

typ

max

–29

1.1

±10

±1.5%

±2Hz

±3.5

–16

+18

–12

5

11

14

0.5

4.0

8.5

40

20

40

20

8

11

12

4.5

50 100

300

3.5759 3.5795 3.5831

30

Unit

dBm

dB

%

dB

dB

dB

ms

ms

ms

ms

ms

ms

µs

µs

µs

ns

ns

MHz

pF

No.3003–4/8

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