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SN74ABT640DBR Datasheet(数据表) 4 Page - Texas Instruments

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部件型号  SN74ABT640DBR
说明  OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
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SN54ABT640, SN74ABT640
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS104C – FEBRUARY 1991 – REVISED JANUARY 1997
4
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
SN54ABT640
SN74ABT640
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
MIN
MAX
MIN
MAX
UNIT
VIK
VCC = 4.5 V,
II = –18 mA
–1.2
–1.2
–1.2
V
VCC = 4.5 V,
IOH = –3 mA
2.5
2.5
2.5
VOH
VCC = 5 V,
IOH = –3 mA
3
3
3
V
VOH
VCC =4 5V
IOH = –24 mA
2
2
V
VCC = 4.5 V
IOH = –32 mA
2*
2
VOL
VCC =4 5V
IOL = 48 mA
0.55
0.55
V
VOL
VCC = 4.5 V
IOL = 64 mA
0.55*
0.55
V
Vhys
100
mV
II
Control inputs
VCC =5 5V
VI =VCC or GND
±1
±1
±1
µA
II
A or B ports
VCC = 5.5 V,
VI = VCC or GND
±100
±100
±100
µA
IOZH‡
VCC = 5.5 V,
VO = 2.7 V
50
50
50
µA
IOZL‡
VCC = 5.5 V,
VO = 0.5 V
–50
–50
–50
µA
Ioff
VCC = 0,
VI or VO ≤ 4.5 V
±100
±100
µA
ICEX
VCC = 5.5 V,
VO = 5.5 V
Outputs high
50
50
50
µA
IO§
VCC = 5.5 V,
VO = 2.5 V
–50
–100
–180
–50
–180
–50
–180
mA
VCC = 5.5 V,
Outputs high
5
250
250
250
µA
ICC
A or B ports
VCC = 5.5 V,
IO = 0,
Outputs low
24
30
30
30
mA
VI = VCC or GND
Outputs disabled
0.5
250
250
250
µA
Data inp ts
VCC = 5.5 V,
One input at 3.4 V,
Outputs enabled
1.5
1.5
1.5
∆ICC¶
Data inputs
,
Other inputs at
VCC or GND
Outputs disabled
0.05
0.05
0.05
mA
Control inputs
VCC = 5.5 V, One input at 3.4 V,
Other inputs at VCC or GND
1.5
1.5
1.5
Ci
Control inputs
VI = 2.5 V or 0.5 V
4
pF
Cio
A or B ports
VO = 2.5 V or 0.5 V
7
pF
* On products compliant to MIL-PRF-38535, this parameter does not apply.
† All typical values are at VCC = 5 V.
‡ 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.
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature, CL = 50 pF (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 5 V,
TA = 25°C
SN54ABT640
SN74ABT640
UNIT
(INPUT)
(OUTPUT)
MIN
TYP
MAX
MIN
MAX
MIN
MAX
tPLH
AorB
BorA
1
2.7
4.2
1
5
1
4.9
ns
tPHL
A or B
B or A
1.5
2.7
4.3
1.5
5
1.5
4.9
ns
tPZH
OE
AorB
1.5
3.7
4.9
1.5
5.9
1.5
5.8
ns
tPZL
OE
A or B
1.3
5
5.9
1.3
7.4
1.3
7.3
ns
tPHZ
OE
AorB
2.5
4.1
6.5
2.5
6.9
2.5
6.8
ns
tPLZ
OE
A or B
2
3.3
5.3
2
5.6
2
5.5
ns
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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