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TUSB2043 Datasheet(PDF) 6 Page - Texas Instruments

Part No. TUSB2043
Description  4-PORT HUB FOR THE UNIVERSAL SERIAL BUS WITH OPTIONAL SERIAL EEPROM INTERFACE
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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TUSB2043 Datasheet(HTML) 6 Page - Texas Instruments

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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
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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