參數(shù)資料
型號： SN74HCT245DB
廠商： Texas Instruments, Inc.
英文描述： 1A, 18V,±4% Tolerance, Voltage Regulator, Ta = 0°C to +125°C; Package: 3 LEAD D2PAK; No of Pins: 3; Container: Tape and Reel; Qty per Container: 800
中文描述： 八路總線收發(fā)器與三態(tài)輸出
文件頁數(shù)： 3/16頁
文件大?。?/td> 529K
代理商： SN74HCT245DB
SN54HCT245, SN74HCT245
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCLS020E – MARCH 1984 – REVISED AUGUST 2003
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
SN54HCT245
MIN
NOM
SN74HCT245
MIN
NOM
UNIT
MAX
MAX
VCC
VIH
VIL
VI
VO
t/
v
TA
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.
Supply voltage
4.5
5
5.5
4.5
5
5.5
V
High-level input voltage
VCC = 4.5 V to 5.5 V
VCC = 4.5 V to 5.5 V
2
2
V
Low-level input voltage
0.8
0.8
V
Input voltage
0
VCC
VCC
500
0
VCC
VCC
500
V
Output voltage
0
0
V
Input transition rise/fall time
ns
°
C
Operating free-air temperature
–55
125
–40
85
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
TA = 25
°
C
TYP
4.499
SN54HCT245
MIN
4.4
SN74HCT245
MIN
4.4
UNIT
MIN
4.4
MAX
MAX
MAX
VOH
VI = VIH or VIL
IOH = –20
μ
A
IOH = –6 mA
IOL = 20
μ
A
IOL = 6 mA
4.5 V
V
3.98
4.3
3.7
3.84
VOL
VI = VIH or VIL
4.5 V
0.001
0.1
0.1
0.1
V
0.17
±
0.1
±
0.01
0.26
±
100
±
0.5
0.4
0.33
±
1000
II
IOZ
ICC
DIR or OE
VI = VCC or 0
VO = VCC or 0
VI = VCC or 0,
One input at 0.5 V or 2.4 V,
Other inputs at 0 or VCC
5.5 V
±
1000
±
10
160
nA
μ
A
μ
A
A or B
5.5 V
±
5
80
IO = 0
5.5 V
8
ICC
5.5 V
1.4
2.4
3
2.9
mA
Ci
DIR or OE
4.5 V
to 5.5 V
3
10
10
10
pF
This is the increase in supply current for each input that is at one of the specified TTL voltage levels, rather than 0 V or VCC.
Parameter Ci does not apply to transceiver I/O ports.
switching characteristics over recommended operating free-air temperature range, C
L
= 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
VCC
TA = 25
°
C
TYP
SN54HCT245
MIN
SN74HCT245
MIN
UNIT
(OUTPUT)
MIN
MAX
MAX
MAX
tpd
A or B
B or A
4.5 V
16
22
33
28
ns
5.5 V
14
20
30
25
ten
OE
A or B
4.5 V
25
46
69
58
ns
5.5 V
22
41
62
52
tdis
OE
A or B
4.5 V
26
40
60
50
ns
5.5 V
23
36
54
45
tt
A or B
4.5 V
5.5 V
9
8
12
11
18
16
15
14
ns
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SN74HCT245DBR 功能描述:總線收發(fā)器 Tri-State Octal Bus RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
SN74HCT245DBRE4 功能描述:總線收發(fā)器 Octal Bus Trnscvrs With 3-State Outputs RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
SN74HCT245DBRG4 功能描述:總線收發(fā)器 Octal 總線收發(fā)器 RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
SN74HCT245DW 功能描述:總線收發(fā)器 Tri-State Octal Bus RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
SN74HCT245DWE4 功能描述:總線收發(fā)器 Octal Bus Trnscvrs With 3-State Outputs RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
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