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TUSB2040A Datasheet(PDF) 5 Page - Texas Instruments

Part No. TUSB2040A
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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TUSB2040A
4-PORT HUB FOR THE UNIVERSAL SERIAL BUS
WITH OPTIONAL SERIAL EEPROM INTERFACE
SLLS288B – FEBRUARY 1998 – REVISED MARCH 1998
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions
MIN
NOM
MAX
UNIT
Supply voltage, VCC
3
3.3
3.6
V
Input voltage, TTL/LVCMOS, VI
0
VCC
V
Output voltage, TTL/LVCMOS, VO
0
VCC
V
High-level input voltage, signal-ended receiver, VIH(REC)
2
VCC
V
Low-level input voltage, signal-ended receiver, VIL(REC)
0.8
V
High-level input voltage, TTL/LVCMOS, VIH(TTL)
2
VCC
V
Low-level input voltage, TTL/LVCMOS, VIL(TTL)
0.8
V
Operating free-air temperature, TA
0
70
°C
External series, differential driver resistor, R(DRV)
22 (–5%)
22 (+5%)
Operating (dc differential driver) high speed mode, f(OPRH)
12
Mb/s
Operating (dc differential driver) low speed mode, f(OPRL)
1.5
Mb/s
Common mode, input range, differential receiver, V(ICR)
0.8
2.5
V
Input transition times, tt, TTL/LVCMOS
0
6
ns
electrical characteristics over recommended ranges of operating free-air temperature and supply
voltage (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
VOH
High level output voltage
USB data lines
R(DRV) = 15 kΩ, to GND
2.8
3.6
V
VOH
High-level output voltage
USB data lines
IOH = – 12 mA (without R(DRV))
VCC – 0.5
V
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
2
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
0.25
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
100
mA
ICC
Input supply current
Suspend mode
1
µA
† Applies for input buffers with hysteresis
‡ Applies for open drain buffers




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