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SN74VMEH22501GQLR Arkusz danych(PDF) 6 Page - Texas Instruments

Numer części SN74VMEH22501GQLR
Szczegółowy opis  8 BIT UNIVERSAL BUS TRANSCEIVER AND TWO 1 BIT BUS TRANSCEIVERS WITH SPLIT LVTTL PORT FEEDBACK PATH AND 3 STATE OUTPUTS
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Producent  TI [Texas Instruments]
Strona internetowa  http://www.ti.com
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SN74VMEH22501
8BIT UNIVERSAL BUS TRANSCEIVER AND TWO 1BIT BUS TRANSCEIVERS
WITH SPLIT LVTTL PORT, FEEDBACK PATH, AND 3STATE OUTPUTS
SCES357E − JULY 2001 − REVISED MARCH 2004
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC and BIAS VCC
−0.5 V to 4.6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, VI (see Note 1)
−0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high-impedance
or power-off state, VO (see Note 1)
−0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high or low state, VO
(see Note 1): 3A port or Y output
−0.5 V to VCC + 0.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B port
−0.5 V to 4.6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current in the low state, IO: 3A port or Y output
50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B port
100 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current in the high state, IO: 3A port or Y output
−50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B port
−100 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, IIK (VI < 0)
−50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, IOK (VO < 0 or VO > VCC): B port
−50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
θJA (see Note 2): DGG package
70
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DGV package
58
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GQL package
42
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
−65
°C to 150°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.
NOTES:
1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Notes 3 and 4)
MIN
TYP
MAX
UNIT
VCC,
BIAS VCC
Supply voltage
3.15
3.3
3.45
V
VI
Input voltage
Control inputs or A port
VCC
5.5
V
VI
Input voltage
B port
VCC
5.5
V
VIH
High-level input voltage
Control inputs or A port
2
V
VIH
High-level input voltage
B port
0.5 VCC + 50 mV
V
VIL
Low-level input voltage
Control inputs or A port
0.8
V
VIL
Low-level input voltage
B port
0.5 VCC − 50 mV
V
IIK
Input clamp current
−18
mA
IOH
High-level output current
3A port and Y output
−12
mA
IOH
High-level output current
B port
−48
mA
IOL
Low-level output current
3A port and Y output
12
mA
IOL
Low-level output current
B port
64
mA
∆t/∆v
Input transition rise or fall rate
Outputs enabled
10
ns/V
∆t/∆VCC
Power-up ramp rate
20
µs/V
TA
Operating free-air temperature
0
85
°C
NOTES:
3. All unused control inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application
report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
4. Proper connection sequence for use of the B-port I/O precharge feature is GND and BIAS VCC = 3.3 V first, I/O second, and
VCC = 3.3 V last, because the BIAS VCC precharge circuitry is disabled when any VCC pin is connected. The control inputs can be
connected anytime, but normally are connected during the I/O stage. If B-port precharge is not required, any connection sequence
is acceptable, but generally, GND is connected first.


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