74LVT245B 查看數據表（PDF） - Philips Electronics
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74LVT245B Datasheet PDF : 10 Pages
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Philips Semiconductors
3.3V Octal transceiver with direction pin (3-State)
Product specification
74LVT245B
LOGIC SYMBOL
1
DIR
2
A0
3
A1
4
A2
5
A3
6
A4
7
A5
8
A6
9
A7
FUNCTION TABLE
INPUTS
OEn
DIR
L
L
L
H
H
X
H = High voltage level
L = Low voltage level
X = Don’t care
Z = High impedance “Off” state
19
OE
18 B0
17 B1
16 B2
15 B3
14 B4
13 B5
12 B6
11 B7
SV00016
INPUTS/OUTPUTS
An
Bn
An= Bn
Inputs
Inputs
Bn =An
Z
Z
LOGIC SYMBOL (IEEE/IEC)
19
G3
3 EN1 (BA)
1
3 EN2 (AB)
2
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
SV00015
ABSOLUTE MAXIMUM RATINGS1,2
SYMBOL
PARAMETER
CONDITIONS
RATING
UNIT
VCC
IIK
VI
IOK
VOUT
IOUT
DC supply voltage
DC input diode current
DC input voltage3
DC output diode current
DC output voltage3
DC output current
VI < 0
VO < 0
Output in Off or High state
Output in Low state
Output in High state
–0.5 to +4.6
V
–50
mA
–0.5 to +7.0
V
–50
mA
–0.5 to +7.0
V
128
mA
–64
Tstg
Storage temperature range
–65 to +150
°C
NOTES:
1. Stresses beyond those listed 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.
2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction
temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150°C.
3. The input and output negative voltage ratings may be exceeded if the input and output clamp current ratings are observed.
1999 Mar 19
3
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