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參數(shù)資料
| 型號(hào)： | SN54ABT126 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Quadruple Bus Buffer Gates With 3-State Outputs(四總線緩沖門(三態(tài)輸出)) |
| 中文描述： | 四人間總線緩沖器門，三態(tài)輸出（四總線緩沖門（三態(tài)輸出）） |
| 文件頁(yè)數(shù)： | 3/6頁(yè) |
| 文件大小： | 138K |
| 代理商： | SN54ABT126 |
SN54ABT126, SN74ABT126
QUADRUPLE BUS BUFFER GATES
WITH 3-STATE OUTPUTS
SCBS183C – FEBRUARY 1991 – REVISED MAY 1997
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
SN54ABT126
MIN
SN74ABT126
MIN
UNIT
MAX
MAX
VCC
VIH
VIL
VI
IOH
IOL
t/
v
t/
VCC
TA
NOTE 3: Unused inputs must be held high or low to prevent them from floating.
Supply voltage
4.5
5.5
4.5
5.5
V
High-level input voltage
2
2
V
Low-level input voltage
0.8
0.8
V
Input voltage
0
VCC
–24
0
VCC
–32
V
High-level output current
mA
Low-level output current
48
64
mA
Input transition rise or fall rate
10
10
ns/V
μ
s/V
°
C
Power-up ramp rate
200
200
Operating free-air temperature
–55
125
–40
85
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
TA = 25
°
C
TYP
SN54ABT126
MIN
SN74ABT126
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
V
0.55*
0.55
Vhys
II
IOZPU
IOZPD
IOZH
IOZL
Ioff
ICEX
IO
100
mV
μ
A
μ
A
μ
A
μ
A
μ
A
μ
A
μ
A
mA
μ
A
mA
μ
A
VCC = 0 to 5.5 V,
VCC = 0 to 2.1 V, VO = 0.5 V to 2.7 V, OE = X§
VCC = 2.1 V to 0, VO = 0.5 V to 2.7 V, OE = X§
VCC = 2.1 V to 5.5 V, VO = 2.7 V, OE
≤
0.8 V
VCC = 2.1 V to 5.5 V, VO = 0.5 V, OE
≤
0.8 V
VCC = 0,
VCC = 5.5 V, VO = 5.5 V
VCC = 5.5 V,
VI = VCC or GND
±
1
±
1
±
1
±
50
±
50
10
±
50
±
50
10
±
50
±
50
10
–10
±
100
50
–10
–10
±
100
50
VI or VO
≤
4.5 V
Outputs high
50
VO = 2.5 V
Outputs high
–50
–100
–200
–50
–200
–50
–200
ICC
VCC = 5.5 V, IO = 0,
VI = VCC or GND
5 5 V I
1
250
250
250
Outputs low
24
30
30
30
Outputs disabled
0.5
250
250
250
VCC = 5.5 V,
One input at 3 4 V
One input at 3.4 V,
Other inputs at VCC or GND
VI = 2.5 V or 0.5 V
VO = 2.5 V or 0.5 V
Outputs enabled
1.5
1.5
1.5
mA
ICC#
Outputs disabled
50
50
50
μ
A
Ci
Co
3
pF
7
pF
* On products compliant to MIL-PRF-38535, this parameter does not apply.
All typical values are at VCC = 5 V.
This parameter is characterized, but not production tested.
§For VCC between 2.1 V and 4 V, OE should be less than or equal to 0.5 V to ensure a low state.
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.
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
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