AM79C988BJC datasheet(16/25 Pages) AMD

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Am79C988A

PRELIMINARY

ABSOLUTE MAXIMUM RATINGS

Storage Temperature. . . . . . . . . . . . . –65

°C to +150°C

Ambient Temperature Under Bias. . . . . . . . . 0 to 70

°C

Supply Voltage referenced to

AVSS or DVSS (AVDD, DVDD) . . . . . . . . . . . . . .–0.3 to +6V

Stresses above those listed under ABSOLUTE MAXIMUM

RATINGS may cause permanent device failure. Functionality

at or above these limits is not implied. Exposure to Absolute

Maximum Ratings for extended periods may affect device re-

liability. Programming conditions may differ.

OPERATING RANGES

Commercial (C) Devices

Temperature (TA) . . . . . . . . . . . . . . . . . .0

°C to + 70° C

Supply Voltages (VDD). . . . . . . . . . . . . . . . . +5 V ±5%

Operating ranges deﬁne those limits between which the

functionality of the device is guaranteed.

DC CHARACTERISTICS over operating ranges unless otherwise speciﬁed

Parameter

Symbol

Parameter Description

Test Conditions

Min

Max

Unit

Digital I/O

VIL

Input LOW Voltage

DVSS = 0.0 V

-0.5

0.8

VIH

Input HIGH Voltage

2.0

DVDD +0.5

VOL

Output LOW Voltage

IOL=4.0 mA

0.4

VOH

Output HIGH Voltage

IOH =-0.4 mA

2.4

IIH

Input Leakage Current HIGH (DIR,

SDATA, CLK, RST)

0<VIN<DVDD

µA

IIL

Input Leakage Current LOW (DIR,

SDATA, CLK, TEST)

0V<VIN<DVDD

-10

µA

IILDH

Input Leakage Current HIGH (TEST)

0<VIN<DVDD

500

µA

IILDL

Input Leakage Current LOW (RST)

0V<VIN<DVDD

-500

µA

PAUI Ports

VPOH

Output HIGH Voltage

PAUI Mode

VDD/2 + 0.45

VPOL

Output LOW Voltage

PAUI Mode

VDD/2 - 0.45

VPIH

Input HIGH Voltage

PAUI Mode

VDD/2 + 0.45

VPIL

Input LOW Voltage

PAUI Mode

VDD/2 - 0.45

IPILH

Input Leakage Current HIGH

AVDD = MAX

µA

IPILL

Input Leakage Current LOW

AVDD = MAX

-10

µA

VPASQ

PDO Squelch (the value PDO must go to

before internal PDO carrier sense can be

turned on)

VDD/2-0.400 VDD/2-0.175

Twisted Pair Ports

IIRXD

Input Current at RXD

AVSS<VIN<AVDD

-500

500

µA

RRXD

RXD Differential Input Resistance

(Note 1)

Ω

VTIVB

RXD

±, Open Circuit Input Voltage

(Bias)

IIN = 0 mA

AVDD-3.0

AVDD-1.5

VTIDV

Differential Mode Input Voltage Range

(RXD)

AVDD = 5.0 V

-3.1

3.1

VTSQ+

RXD Positive Squelch Threshold

(Peak)

Sinusoid 5 MHz <f< 10 MHz

300

520

VTSQ-

RXD Negative Squelch Threshold

(Peak)

Sinusoid 5 MHz <f< 10 MHz

-520

-300

VTHS+

RXD Post-Squelch Positive Threshold

(Peak)

Sinusoid 5 MHz <f< 10 MHz

120

293

VTHS-

RXD Post-Squelch Negative Threshold

(Peak)

Sinusoid 5 MHz <f< 10 MHz

-293

-120

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