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SN74ABT821ADWG4 Datasheet(Fiches technique) 4 Page - Texas Instruments

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Numéro de pièce SN74ABT821ADWG4
Description  10-BIT BUS-INTERFACE FLIP-FLOPS WITH 3-STATE OUTPUTS
Télécharger  15 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
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SN54ABT821, SN74ABT821A
10-BIT BUS-INTERFACE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCBS193E – FEBRUARY 1991 – REVISED MAY 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
SN54ABT821
SN74ABT821A
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
VCC = 0 to 5.5 V,
VI = VCC or GND
±1
±1
±1
µA
IOZPU‡
VCC = 0 to 2.1 V, VO = 0.5 to 2.7 V, OE = X
±50*
±50
µA
IOZPD‡
VCC = 2.1 V to 0, VO = 0.5 to 2.7 V, OE = X
±50*
±50
µA
IOZH
VCC = 2.1 V to 5.5 V, VO = 2.7 V, OE ≥ 2 V
10
10
10
µA
IOZL
VCC = 2.1 V to 5.5 V, VO = 0.5 V, OE ≥ 2 V
–10
–10
–10
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
V5 5 V I
0
Outputs high
1
250
250
250
µA
ICC
VCC = 5.5 V, IO = 0,
VI =VCC or GND
Outputs low
24
38
38
38
mA
VI = VCC or GND
Outputs disabled
0.5
250
250
250
µA
∆ICC¶
VCC = 5.5 V, One input at 3.4 V,
Other inputs at VCC or GND
1.5
1.5
1.5
mA
Ci
VI = 2.5 V or 0.5 V
3.5
pF
Co
VO = 2.5 V or 0.5 V
7.5
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.
§ 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) (see Figure 1)
VCC = 5 V,
TA = 25°C
SN54ABT821
SN74ABT821A
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
fclock
Clock frequency
0
125
0
125
0
125
MHz
t
Pulse duration CLK high or low
High
2.9
2.9
2.9
ns
tw
Pulse duration, CLK high or low
Low
3.8
3.8
3.8
ns
tsu
Setup time, data before CLK
2.1
2.1
2.1
ns
th
Hold time, data after CLK
1.3
1.3
1.3
ns




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