参数资料
型号: SN74ABT821DBR
厂商: TEXAS INSTRUMENTS INC
元件分类: 总线收发器
英文描述: ABT SERIES, 10-BIT DRIVER, TRUE OUTPUT, PDSO24
封装: PLASTIC, SSOP-24
文件页数: 4/7页
文件大小: 121K
代理商: SN74ABT821DBR
SN54ABT821, SN74ABT821
10-BIT BUS-INTERFACE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCBS193A – FEBRUARY 1991 – REVISED JULY 1994
2–4
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
SN74ABT821
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
VIK
VCC = 4.5 V,
II = –18 mA
–1.2
V
VCC = 4.5 V,
IOH = – 3 mA
2.5
VOH
VCC = 5 V,
IOH = – 3 mA
3
V
VOH
VCC =4 5V
IOH = – 24 mA
2
V
VCC = 4.5 V
IOH = – 32 mA
2*
2
VOL
VCC =4 5V
IOL = 48 mA
0.55
V
VOL
VCC = 4.5 V
IOL = 64 mA
0.55*
0.55
V
II
VCC = 5.5 V,
VI = VCC or GND
±1
A
IOZPU
VCC = 0 to 2.1 V,
VO = 0.5 to 2.7 V,
OE = X
±50
A
IOZPD
VCC = 2.1 V to 0,
VO = 0.5 to 2.7 V,
OE = X
±50
A
IOZH
VCC = 2.1 V to 5.5 V, VO = 2.7 V,
OE
≥ 2 V
10
A
IOZL
VCC = 2.1 V to 5.5 V, VO = 0.5 V,
OE
≥ 2 V
–10
A
Ioff
VCC = 0,
VI or VO ≤ 4.5 V
±100
A
ICEX
VCC = 5.5 V,
VO = 5.5 V Outputs high
50
A
IO
VCC = 5.5 V,
VO = 2.5 V
–50
–140
–180
–50
–180
–50
–180
mA
V5 5 V
I
0
Outputs high
1
250
A
ICC
VCC = 5.5 V,
IO = 0,
VI =VCC or GND
Outputs low
24
38
mA
VI = VCC or GND
Outputs disabled
0.5
250
A
ICC§
VCC = 5.5 V,
One input at 3.4 V,
Other inputs at VCC or GND
1.5
mA
Ci
VI = 2.5 V or 0.5 V
4
pF
Co
VO = 2.5 V or 0.5 V
7
pF
* On products compliant to MIL-STD-883, Class B, this parameter does not apply.
All typical values are at VCC = 5 V.
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
SN74ABT821
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
ns
tw
Pulse duration, CLK high or low
Low
3.8
ns
tsu
Setup time, data before CLK
2.1
ns
th
Hold time, data after CLK
1.3
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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