AMD

12

Am7996

DC CHARACTERISTICS over operating ranges unless otherwise specified

Parameter

Symbol

Parameter Description

Test Conditions (Note 10)

Min

Typ

Max

Unit

Transmit Signals

Transmit Output HIGH Voltage (Note 1)

Ω

0

–0.05

–0.425

V

Transmit Output LOW Voltage (Note 1)

Ω

–1.625

–2.0

–2.2

V

Transmit Average DC Voltage with 50%

Ω

–0.925

–1.0

–1.1

V

Duty-Cycle into DO+, DO– (Note 1)

DO+, DO– Common Mode Bias

Voltage

+ 1.2

+ 1.5

+ 1.8

Differential Input Squelch Threshold

–175

–225

–275

mV

(DO+, DO–) (Note 9)

Transmit Current (Note 9)

–65

–88

mA

–2.0

2.5

Differential Input Resistance (DO+, DO–)

68

k

Ω

1.5

2

k

Ω

Receive/Collision Signals

Differential Output Voltage

+550

+670

+850

(DI+, DI–; CI+, CI–)

–550

–670

–850

Common-Mode Output

Ω

–1.0

–2.0

–3.0

V

(DI+, DI–; CI+, CI–)

Differential Output Voltage Imbalance

Ω

5

20

mV

Differential Output Idle Voltage

–20

0

+20

mV

(DI+, DI–; CI+, CI–)

Carrier Sense Threshold

–400

–500

–600

mV

Collision Sense Threshold (Note 5)

–1515 –1600

–1700

mV

RXT Input Bias Current

–0.5

0

+0.5

µA

Differential Output Idle Current

–0.5

0

+0.5

mA

(DI+, DI–; CI+, CI–)

Global

Supply Current–Non-Transmitting

–88

–105

Supply Current–Transmitting

–128

–155

Parameter

Symbol

Parameter Description

Test Conditions

Min

Typ

Max

Unit

Ceramic DIP

1.7

Plastic DIP/PLCC

1.1

Notes:

See notes following Switching Characteristics section.

*Parameters are not “Tested.”

Commercial

Input Current (DO+, DO–)

mA

V

mV

Ω

Ω (Note 4)

mA

RXT Input Capacitance

pF