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参数资料
| 型号： | SN54273J |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 锁存器 |
| 英文描述： | TTL/H/L SERIES, OCTAL POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, CDIP20 |
| 封装： | CERAMIC, DIP-20 |
| 文件页数： | 4/8页 |
| 文件大小： | 301K |
| 代理商： | SN54273J |
SN54273, SN54LS273, SN74273, SN74LS273
OCTAL D-TYPE FLIP-FLOP WITH CLEAR
SDLS090 – OCTOBER 1976 – REVISED MARCH 1988
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching characteristics, VCC = 5 V, TA = 25°C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
fmax
Maximum clock frequency
C
30
40
MHz
tPHL
Propagation delay time, high-to-low-level output from clear
CL = 15 pF,
RL = 400
18
27
ns
tPLH
Propagation delay time, low-to-high-level output from clock
RL = 400 ,
See Note 3
17
27
ns
tPHL
Propagation delay time, high-to-low-level output from clock
See Note 3
18
27
ns
NOTE 3: Load circuits and voltage waveforms are shown in Section 1.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC (see Note 1)
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage
7 V
. . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: SN54LS273
– 55
°C to 125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74LS273
0
°C to 70°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range
– 65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NOTE 1: Voltage values are with respect to network ground terminal.
recommended operating conditions
SN54LS273
SN74LS273
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
Supply voltage, VCC
4.5
5
5.5
4.75
5
5.25
V
High-level output current, IOH
– 400
A
Low-level output current, IOL
4
8
mA
Clock frequency, fclock
0
30
0
30
MHz
Width of clock or clear pulse, tw
20
ns
Setup time t
Data input
20
↑
20
↑
ns
Setup time, tsu
Clear inactive state
25
↑
25
↑
ns
Data hold time, th
5
↑
5
↑
ns
Operating free-air temperature, TA
–55
125
0
70
°C
↑ The arrow indicates that the rising edge of the clock pulse is used for reference.
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| SN54273W | 制造商:TI 制造商全称:Texas Instruments 功能描述:OCTAL D-TYPE FLIP-FLOP WITH CLEAR |
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