參數(shù)資料
型號(hào): SN54ABT16821WD
廠商: Texas Instruments, Inc.
元件分類: 通用總線功能
英文描述: 20-BIT BUS-INTERFACE FLIP-FLOPS WITH 3-STATE OUTPUTS
中文描述: 20位總線接口倒裝3觸發(fā)器態(tài)輸出
文件頁數(shù): 4/7頁
文件大?。?/td> 122K
代理商: SN54ABT16821WD
SN54ABT16821, SN74ABT16821
20-BIT BUS-INTERFACE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCBS216B – JUNE 1992 – REVISED JANUARY 1997
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
SN54ABT16821
MIN
SN74ABT16821
MIN
UNIT
MAX
MAX
VCC
VIH
VIL
VI
IOH
IOL
t/
v
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
Outputs enabled
10
10
ns/V
°
C
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
SN54ABT16821
MIN
SN74ABT16821
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
2.5
2.5
2.5
VOH
3
3
3
V
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
IOZH
IOZL
Ioff
ICEX
IO
100
mV
μ
A
μ
A
μ
A
μ
A
μ
A
mA
μ
A
mA
μ
A
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 5.5 V,
VCC = 0,
VCC = 5.5 V,
VCC = 5.5 V,
VI = VCC or GND
VO = 2.7 V
VO = 0.5 V
VI or VO
4.5 V
VO = 5.5 V
VO = 2.5 V
±
1
50
±
1
50
±
1
50
–50
±
100
50
–50
–50
±
100
50
Outputs high
50
–50
–100
–200
–50
–200
–50
–200
VCC = 5.5 V, IO = 0,
VI= VCCor GND
VI = VCC or GND
5 5 V I
Outputs high
500
500
500
ICC
Outputs low
89
89
89
Outputs disabled
500
500
500
ICC§
VCC = 5.5 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
1.5
1.5
1.5
mA
Ci
Co
3.5
pF
7.5
pF
* On products compliant to MIL-PRF-38535, 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.
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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