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AM7992B 数据表(PDF) 13 Page - Advanced Micro Devices |
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AM7992B 数据表(HTML) 13 Page - Advanced Micro Devices |
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13 / 27 page  AMD 13 Am7992B DC CHARACTERISTICS over operating ranges unless otherwise specified Parameter Symbol Parameter Description Test Conditions Min Max Unit VOH Output HIGH Voltage RX, IOH = –1.0 mA, VCC = Min 2.4 V RENA, CLSN, TCLK, RCLK VOL Output LOW Voltage IOL = 16 mA, VCC = Min 0.5 V RCLK, TSEL, TCLK, RENA, RX, CLSN IOL = 1 mA, VCC = Min 0.4 V VOD Differential Output Voltage TX+ > TX– for VO RL = 78 Ω 550 770 mV (Transmit+) – (Transmit–) TX+ < TX– for VO –550 –770 mV VOD OFF Transmit Differential Output Idle Voltage VCC = Min, RL = 78 Ω (Note 1) –20 20 mV IOD OFF Transmit Differential Output Idle Current TSEL = HIGH (Note 2) –0.5 0.5 mA VCMT Transmit Output Common-Mode Voltage RL = 78 Ω, VCC = Min 0 5 V VODI Transmit Differential Output Voltage (Note 1) 20 mV Imbalance ||VO| – |VO|| VIH Input HIGH Voltage TX, TENA 2.0 V IIH Input HIGH Current TX, TENA, TEST VCC = Max, VIN = 2.7 V +50 µA VIL Input LOW Current TX, TENA 0.8 V IIL Input LOW Current TX, TENA, TEST VCC = Max, VIN = 0.4 V –400 µA VIRD Differential Input Threshold (Receive Data) VCM = 0 V, (Note 4) Ceramic Package –35 +35 mV Plastic Package –65 +65 mV VIRVD Differential Mode Input Voltage Range (Note 3) –1.5 +1.5 V (Receive ±/Collision ±) VIRVC Receive ± and Collision ± Common (Note 2) 0 5.5 V Mode Voltage VIDC Differential Input Threshold to Detect Carrier VCM = 0 V (Note 4) –175 –275 mV ICC Power Supply Current VCC = Max (Note 5) 180 mA VIB Input Breakdown Voltage (TX, TENA, TEST) II = 1 mA, VCC = Max 5.5 V VIC Input Clamp Voltage IIN = –18 mA, VCC = Min –1.2 V VODP Undershoot Voltage on Transmit (Note 3) –100 mV Return to Zero (End of Message) ISC Short Circuit Current VCC = Max (Note 6) –40 –150 mA RCLK, RX, TCLK, CLSN, RENA RIDF Differential Input Resistance VCC = 0 to Max (Note 3) 6 k Ω RICM Common Mode Input Resistance VCC = 0 to Max (Note 3) 1.5 k Ω VICM Receive and Collision Input Bias Voltage IIN = 0, VCC = Max 1.5 4.2 V IILD Receive and Collision Input LOW Current VIN = –1 V, VCC = Max –1.64 mA IIHD Receive and Collision Input HIGH Current VIN = 6 V, VCC = Min +1.10 mA IIHZ Receive and Collision Input HIGH VCC = 0, VIN = +6 V 1.86 mA Current Power Off IIHX Oscillator (X1) Input HIGH Current VIN = 2.4 V, VCC = Max +800 µA IILX Oscillator (X1) Input LOW Current VIN = 0.4 V, VCC = Max –1.2 mA VIHX Oscillator (X1) Input HIGH Voltage (Note 3) 2.0 V VILX Oscillator (X1) Input LOW Voltage (Note 3) 0.8 V Com’l Note: See notes following Switching Characteristics table. |
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