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TUSB2043 Datasheet(PDF) 6 Page - Texas Instruments |
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TUSB2043 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 16 page TUSB2043 4-PORT HUB FOR THE UNIVERSAL SERIAL BUS WITH OPTIONAL SERIAL EEPROM INTERFACE SLLS308A – FEBRUARY 1999 – REVISED AUGUST 1999 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended ranges of operating free-air temperature and supply voltage (unless otherwise noted) PARAMETER TEST CONDITIONS MIN MAX UNIT TTL /LVCMOS IOH = –4 mA VCC – 0.5 VOH High-level output voltage USB data lines R(DRV) = 15 kΩ, to GND 2.8 V USB data lines IOH = – 12 mA (without R(DRV)) VCC – 0.5 TTL /LVCMOS IOL = 4 mA 0.5 VOL Low-level output voltage USB data lines R(DRV) = 1.5 k Ω to 3.6 V 0.3 V USB data lines IOL = 12 mA (without R(DRV)) 0.5 VIT Positive input threshold voltage TTL /LVCMOS 1.8 V VIT+ Positive input threshold voltage Single-ended 0.8 V ≤ VICR ≤ 2.5 V 1.8 V VIT Negative input threshold voltage TTL /LVCMOS 0.8 V VIT– Negative-input threshold voltage Single-ended 0.8 V ≤ VICR ≤ 2.5 V 1 V Vh Input hysteresis† (V V ) TTL /LVCMOS 0.3 0.7 V Vhys Input hysteresis† (VT+ – VT–) Single-ended 0.8 V ≤ VICR ≤ 2.5 V 300 500 mV IOZ High impedance output current TTL/LVCMOS V = VCC or GND‡ ±10 µA IOZ High-impedance output current USB data lines 0 V ≤ VO ≤ VCC ±10 µA IIL Low-level input current TTL/LVCMOS VI = GND –1 µA IIH High-level input current TTL/LVCMOS VI = VCC 1 µA zo(DRV) Driver output impedance USB data lines Static VOH or VOL 7.1 19.9 Ω VID Differential input voltage USB data lines 0.8 V ≤ VICR ≤ 2.5 V 0.2 V ICC Input supply current Normal operation 40 mA ICC Input supply current Suspend mode 1 µA † Applies for input buffers with hysteresis ‡ Applies for open drain buffers differential driver switching characteristics over recommended ranges of operating free-air temperature and supply voltage, CL = 50 pF (unless otherwise noted) full speed mode PARAMETER TEST CONDITIONS MIN MAX UNIT tr Transition rise time for DP or DM See Figure 1 and Figure 2 4 20 ns tf † Transition fall time for DP or DM See Figure 1 and Figure 2 4 20 ns t(RFM) Rise/fall time matching§ (tr/tf) x 100 90% 110% VO(CRS) Signal crossover output voltage§ 1.3 2.0 V § Characterized only. Limits are approved by design and are not production tested low speed mode PARAMETER TEST CONDITIONS MIN MAX UNIT tr Transition rise time for DP or DM§ CL = 200 pF to 600 pF, See Figure 1 and Figure 2 75 300 ns tf Transition fall time for DP or DM§ CL = 200 pF to 600 pF, See Figure 1 and Figure 2 75 300 ns t(RFM) Rise/fall time matching§ (tr/tf) x 100 80% 120% VO(CRS) Signal crossover output voltage§ CL = 200 pF to 600 pF 1.3 2.0 V § Characterized only. Limits are approved by design and are not production tested |
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