TQ9501/TQ9502

9

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2. The TTL inputs could be HIGH or LOW.

4. These are absolute values with respect to device ground.

5. No more than one output should be tested at a time. Duration of the short circuit should not exceed one second.

Table 7. DC Characteristics—TQ9501 Transmitter TTL Signals

(TXDO..9, TXCLK, BYTECLK, LOOPEN, SIGDET, REFCLK, RATESEL)

(Over operating range unless otherwise specified)

Symbol

Description

Test Conditions

Min.

Typ.

Max.

Unit

Output HIGH voltage

2.4

3.2

V

Output LOW voltage

0.2

0.5

V

Output short-circuit current

–15

–120

mA

Input LOW current

– 400

µA

Input HIGH current

25

µA

Input HIGH current

1

mA

Input HIGH level

Guaranteed input logical HIGH

2.0

V

Input LOW level

Guaranteed input logical LOW

0.8

V

voltage for all inputs

Input clamp voltage

–1.2

V

Power supply current

175

220

mA

Table 8. DC Characteristics—TQ9501 Transmitter PECL Signals (TX, TY, TLX, TLY, SIG, SIGN)

Symbol

Description

Test Conditions

Min.

Typ.

Max.

Unit

Output HIGH voltage

V

Output LOW voltage

V

Output common mode voltage

V

Output differential voltage

0.60

1.2

V

Input LOW current

200

µA

Input HIGH current

250

µA

Highest input HIGH voltage

V

Lowest input LOW voltage

2.4

V

Differential input voltage

0.4

1.2

V

Input common mode voltage

2.8

V