參數(shù)資料
型號: SN74HC245N3
廠商: TEXAS INSTRUMENTS INC
元件分類: 總線收發(fā)器
英文描述: HC/UH SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDIP20
封裝: PLASTIC, DIP-20
文件頁數(shù): 15/21頁
文件大小: 764K
代理商: SN74HC245N3
SN54HC245, SN74HC245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCLS131D DECEMBER 1982 REVISED AUGUST 2003
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
SN54HC245
SN74HC245
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
VCC
Supply voltage
2
5
6
2
5
6
V
VCC = 2 V
1.5
VIH
High-level input voltage
VCC = 4.5 V
3.15
V
VIH
High level input voltage
VCC = 6 V
4.2
V
VCC = 2 V
0.5
VIL
Low-level input voltage
VCC = 4.5 V
1.35
V
VIL
Low level input voltage
VCC = 6 V
1.8
V
VI
Input voltage
0
VCC
0
VCC
V
VO
Output voltage
0
VCC
0
VCC
V
VCC = 2 V
1000
Δt/Δv
Input transition rise/fall time
VCC = 4.5 V
500
ns
Δt/Δv
Input transition rise/fall time
VCC = 6 V
400
ns
TA
Operating free-air temperature
55
125
40
85
°C
NOTE 3: All unused 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.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
V
TA = 25°C
SN54HC245
SN74HC245
UNIT
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
2 V
1.9
1.998
1.9
IOH = 20 μA
4.5 V
4.4
4.499
4.4
VOH
VI = VIH or VIL
IOH
20
μA
6 V
5.9
5.999
5.9
V
VOH
VI
VIH or VIL
IOH = 6 mA
4.5 V
3.98
4.3
3.7
3.84
V
IOH = 7.8 mA
6 V
5.48
5.8
5.2
5.34
2 V
0.002
0.1
IOL = 20 μA
4.5 V
0.001
0.1
VOL
VI = VIH or VIL
IOL
20
μA
6 V
0.001
0.1
V
VOL
VI
VIH or VIL
IOL = 6 mA
4.5 V
0.17
0.26
0.4
0.33
V
IOL = 7.8 mA
6 V
0.15
0.26
0.4
0.33
II
DIR or OE
VI = VCC or 0
6 V
±0.1
±100
±1000
nA
IOZ
A or B
VO = VCC or 0
6 V
±0.01
±0.5
±10
±5
μA
ICC
VI = VCC or 0,
IO = 0
6 V
8
160
80
μA
Ci
DIR or OE
2 V to 6 V
3
10
pF
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