參數(shù)資料
型號(hào)： SN74HC244DB
廠商： Texas Instruments, Inc.
英文描述： OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS
中文描述： 八路緩沖器和線路驅(qū)動(dòng)器，三態(tài)輸出
文件頁(yè)數(shù)： 3/16頁(yè)
文件大?。?/td> 534K
代理商： SN74HC244DB
SN54HC244, SN74HC244
OCTAL BUFFERS AND LINE DRIVERS
WITH 3-STATE OUTPUTS
SCLS130D – DECEMBER 1982 – REVISED AUGUST 2003
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
SN54HC244
MIN
NOM
SN74HC244
MIN
NOM
UNIT
MAX
MAX
VCC
Supply voltage
2
5
6
2
5
6
V
VIH
High-level input voltage
VCC = 2 V
VCC = 4.5 V
VCC = 6 V
VCC = 2 V
VCC = 4.5 V
VCC = 6 V
1.5
1.5
V
3.15
3.15
4.2
4.2
VIL
Low-level input voltage
0.5
0.5
V
1.35
1.35
1.8
1.8
VI
VO
Input voltage
0
VCC
VCC
1000
0
VCC
VCC
1000
V
Output voltage
0
0
V
t/ v
Input transition rise/fall time
VCC = 2 V
VCC = 4.5 V
VCC = 6 V
500
500
ns
400
400
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
VCC
TA = 25
°
C
TYP
1.998
SN54HC244
MIN
1.9
SN74HC244
MIN
1.9
UNIT
MIN
1.9
MAX
MAX
MAX
VOH
V = V
VI = VIH or VIL
IOH = –20 A
μ
A
2 V
V
4.5 V
4.4
4.499
4.4
4.4
6 V
5.9
5.999
5.9
5.9
IOH = –6 mA
IOH = –7.8 mA
4.5 V
3.98
4.3
3.7
3.84
6 V
5.48
5.8
5.2
5.34
VOL
V = V
VI = VIH or VIL
IOL = 20 A
μ
A
2 V
0.002
0.1
0.1
0.1
V
4.5 V
0.001
0.1
0.1
0.1
6 V
0.001
0.1
0.1
0.1
IOL = 6 mA
IOL = 7.8 mA
4.5 V
0.17
0.26
0.4
0.33
6 V
0.15
±
0.1
±
0.01
0.26
±
100
±
0.5
0.4
0.33
±
1000
II
IOZ
ICC
Ci
VI = VCC or 0
VO = VCC or 0,
VI = VCC or 0,
6 V
±
1000
±
10
160
nA
μ
A
μ
A
pF
VI = VIH or VIL
IO = 0
6 V
±
5
80
6 V
8
2 V to 6 V
3
10
10
10
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SN74HC244DW 制造商:Texas Instruments 功能描述:ICS BUFFERS/DRIVERS/RECEIVERS LOGIC LOG
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