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SN74LVCH8T245DBQR Arkusz danych(PDF) 5 Page - Texas Instruments

Numer części SN74LVCH8T245DBQR
Szczegółowy opis  8-BIT DUAL-SUPPLY BUS TRANSCEIVER
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Producent  TI1 [Texas Instruments]
Strona internetowa  http://www.ti.com
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Electrical Characteristics
(1) (2)
SN74LVCH8T245
8-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS
SCES637A – AUGUST 2005 – REVISED FEBRUARY 2007
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VCCA
VCCB
MIN
TYP
MAX
MIN
MAX
UNIT
IOH = –100 µA,
VI = VIH
1.65 V to 4.5 V 1.65 V to 4.5 V
VCCO – 0.1
IOH = –4 mA,
VI = VIH
1.65 V
1.65 V
1.2
VOH
IOH = –8 mA,
VI = VIH
2.3 V
2.3 V
1.9
V
IOH = –24 mA,
VI = VIH
3 V
3 V
2.4
IOH = –32 mA,
VI = VIH
4.5 V
4.5 V
3.8
IOL = 100 µA,
VI = VIL
1.65 V to 4.5 V 1.65 V to 4.5 V
0.1
IOL = 4 mA,
VI = VIL
1.65 V
1.65 V
0.45
VOL
IOL = 8 mA,
VI = VIL
2.3 V
2.3 V
0.3
V
IOL = 24 mA,
VI = VIL
3 V
3 V
0.55
IOL = 32 mA,
VI = VIL
4.5 V
4.5 V
0.55
Control
II
VI = VCCA or GND
1.65 V to 5.5 V 1.65 V to 5.5 V
±0.5
±1
±2
µA
inputs
VI = 0.58 V
1.65 V
1.65 V
15
VI = 0.7 V
2.3 V
2.3 V
45
IBHL(3)
µA
VI = 0.8 V
3 V
3 V
75
VI = 0.1.35 V
4.5 V
4.5 V
100
VI = 1.07 V
1.65 V
1.65 V
–15
VI = 1.7 V
2.3 V
2.3 V
–45
IBHH(4)
µA
VI = 2 V
3 V
3 V
–75
VI = 3.15 V
4.5 V
4.5 V
–100
1.95 V
1.95 V
200
2.7 V
2.7 V
300
IBHLO(5)
VI = 0 to VCC
µA
3.6 V
3.6 V
500
5.5 V
5.5 V
900
1.95 V
1.95 V
–200
2.7 V
2.7 V
–300
IBHHO(6)
VI = 0 to VCC
µA
3.6 V
3.6 V
–500
5.5 V
5.5 V
–900
A port
0 V
0 to 5.5 V
±0.5
±1
±2
Ioff
VI or VO = 0 to 5.5 V
µA
B port
0 to 5.5 V
0 V
±0.5
±1
±2
A or B
OE = VIH
1.65 V to 5.5 V 1.65 V to 5.5 V
±1
±2
port
VO = VCCO or GND,
IOZ
µA
B port
VI = VCCI or GND
0 V
5.5 V
±1
±2
OE = don't
care
A port
5.5 V
0 V
±1
±2
1.65 V to 5.5 V 1.65 V to 5.5 V
20
ICCA
VI = VCCI or GND,
IO = 0
5 V
0 V
20
µA
0 V
5 V
–2
1.65 V to 5.5 V 1.65 V to 5.5 V
20
ICCB
VI = VCCI or GND,
IO = 0
5 V
0 V
–2
µA
0 V
5 V
20
ICCA + ICCB
VI = VCCI or GND,
IO = 0
1.65 V to 5.5 V 1.65 V to 5.5 V
30
µA
(1)
VCCO is the VCC associated with the output port.
(2)
VCCI is the VCC associated with the input port.
(3)
The bus-hold circuit can sink at least the minimum low sustaining current at VIL max. IBHL should be measured after lowering VIN to GND
and then raising it to VIL max.
(4)
The bus-hold circuit can source at least the minimum high sustaining current at VIH min. IBHH should be measured after raising VIN to
VCC and then lowering it to VIH min.
(5)
An external driver must source at least IBHLO to switch this node from low to high.
(6)
An external driver must sink at least IBHHO to switch this node from high to low.
5
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