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TUSB2077A Datasheet(PDF) 5 Page - Texas Instruments

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Part No. TUSB2077A
Description  7-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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TUSB2077A Datasheet(HTML) 5 Page - Texas Instruments

 
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TUSB2077A
7-PORT HUB FOR THE UNIVERSAL SERIAL BUS
WITH OPTIONAL SERIAL EEPROM INTERFACE
SLLS414 – MARCH 2000
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Terminal Functions (Continued)
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
SUSPND
1
O
Suspend status. SUSPND is an active high output available for external logic power down operations.
During the SUSPEND mode, SUSPND is high. SUSPND is low for normal operation.
VCC
9, 46
3.3-V supply voltage.
XTAL1/CLK48
45
I
Crystal 1/48-MHz Clock Input. When MODE is low, XTAL1/CLK48 is a 6-MHz crystal input with 50%
duty cycle. An internal APLL generates the 48-MHz and 12-MHz clocks used internally by the ASIC
logic. When MODE is high, XTAL1/CLK48 acts as the input of the 48 MHz clock and the internal APLL
logic is bypassed.
XTAL2
44
O
Crystal 2. XTAL2 is a 6-MHz crystal output. This terminal should be left open when using an oscillator.
† All LED control are 3-stated during low-power suspend.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC (see Note 1)
– 0.5 V to 3.6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltgage range, VI
– 0.5 V to VCC + 0.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, VO
–0.5 V to VCC + 0.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, IIK, (VI < 0 V or VI > VCC)
±20 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, IOK, (VO < 0 V or VO > VCC)
±20 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
–65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA
0
°C to 70°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltage levels are with respect to GND.
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
0.8
V
Operating free-air temperature, TA
0
70
°C
External series, differential driver resistor, R(DRV)
22
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 (tr and tf), TTL/LVCMOS‡
0
25
ns
Junction temperature range, TJ¶
0
115
°C
‡ Applies for input and bidirectional buffers
§ Applies for output and bidirectional buffers
¶ These junction temperatures reflect simulated conditions. Absolute maximum junction temperature is 150
°C. The customer is responsible for
verifying junction temperature.


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