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參數(shù)資料
| 型號： | SN74ABT2953 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Octal Bus Transceivers And Registers With 3-State Outputs(八總線收發(fā)器和寄存器(三態(tài)輸出)) |
| 中文描述： | 八路總線收發(fā)器和寄存器具有三態(tài)輸出（八總線收發(fā)器和寄存器（三態(tài)輸出）） |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 166K |
| 代理商： | SN74ABT2953 |
SN54ABT2953, SN74ABT2953
OCTAL BUS TRANSCEIVERS AND REGISTERS
WITH 3-STATE OUTPUTS
SCBS467 – FEBRUARY 1991 – REVISED OCTOBER 1992
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
TA = 25
°
C
TYP
SN54ABT2953
MIN
SN74ABT2953
MIN
UNIT
MIN
MAX
MAX
MAX
VIK
VCC = 4.5 V,
VCC = 4.5 V,
VCC = 5 V,
II = –18 mA
IOH = – 3 mA
IOH = – 3 mA
IOH = –24 mA
IOH = – 32 mA
IOL = 48 mA
IOL = 64 mA
–1.2
–1.2
–1.2
V
VOH
2.5
2.5
2.5
V
3
3
3
VCC= 4 5 V
VCC = 4.5 V
2
2
2
2
VOL
VCC= 4 5 V
VCC = 4.5 V
0.55
0.55
0.55
V
0.55
±
1
±
100
50
II
VCC = 5.5 V,
VCC 5.5 V,
VI = VCC or GND
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 0,
VCC = 5.5 V,
VCC = 5.5 V,
Control inputs
±
1
±
1
μ
A
A or B ports
±
100
50
±
100
50
IOZH§
IOZL§
Ioff
ICEX
IO
VO = 2.7 V
VO = 0.5 V
VI or VO
≤
4.5 V
VO = 5.5 V
VO = 2.5 V
μ
A
μ
A
μ
A
μ
A
mA
μ
A
mA
μ
A
–50
±
100
50
–50
–50
±
100
50
Outputs high
50
–50
–100
–180
–50
–180
–50
–180
VCC = 5.5 V,
IO
VI = VCC or GND
Outputs high
1
250
250
250
ICC
A or B ports
Outputs low
24
35
35
35
Outputs disabled
0.5
250
250
250
VCC = 5.5 V,
Other inputs at VCC or GND
VI = 2.5 V or 0.5 V
VO = 2.5 V or 0.5 V
One input at 3.4 V,
1 5
1.5
1 5
1.5
1 5
1.5
mA
ICC#
Ci
Cio
Control inputs
4
pF
A or B ports
7
pF
All typical values are at VCC = 5 V.
On products compliant to MIL-STD-883, Class B, this parameter does not apply.
§The parameters IOZH and IOZL include the input leakage current.
Not more than one output should be tested at a time, and the duration of the test should not exceed one second.
#This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND.
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
VCC = 5 V,
TA = 25
°
C
MIN
SN54ABT2953
SN74ABT2953
UNIT
MAX
MIN
MAX
MIN
MAX
fclock
Clock frequency
0
150
0
150
0
150
MHz
tw
Pulse duration
CLK high
3
3
3
ns
CLK low
3.5
3.5
3.5
Setup time before CLK
b f
↑
A or B
High
4
4
4
tsu
Low
3
3
3
ns
CLKEN
High
3.5
3.5
3.5
Low
2.5
2.5
2.5
th
Hold time after CLK
↑
A or B
CLKEN
0
0
0
0
0
0
ns
P
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