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参数资料
| 型号： | SN74LS173ANSR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 锁存器 |
| 英文描述： | LS SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, PDSO16 |
| 封装： | GREEN, PLASTIC, SOP-16 |
| 文件页数： | 18/20页 |
| 文件大小： | 643K |
| 代理商： | SN74LS173ANSR |
SN54173, SN54LS173A, SN74173, SN74LS173A
4-BIT D-TYPE REGISTERS
WITH 3-STATE OUTPUTS
SDLS067A – OCTOBER 1976 – REVISED JUNE 1999
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions
SN54LS173A
SN74LS173A
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5
5.5
4.75
5
5.25
V
IOH
High-level output current
–1
–2.6
mA
IOL
Low-level output current
12
24
mA
TA
Operating free-air temperature
–55
125
0
70
°C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54LS173A
SN74LS173A
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VIH
High-level input voltage
2
V
VIL
Low-level input voltage
0.7
0.8
V
VIK
Input clamp voltage
VCC = MIN,
II = –18 mA
–1.5
V
VOH
High-level output voltage
VCC = MIN,
VIL = VILmax,
VIH = 2 V,
IOH = MAX
2.4
3.4
2.4
3.1
V
VOL
Low level output voltage
VCC = MIN,
IOL = 12 mA
0.25
0.4
0.25
0.4
V
VOL
Low-level output voltage
CC
,
VIL = 0.8 V,
IOL = 24 mA
0.35
0.5
V
IO( ff)
Off-state (high-impedance state)
VCC = MAX,
VO = 2.7 V
20
V
IO(off)
(g
)
output current
CC
,
VIH = 2 V
VO = 0.4 V
–20
V
II
Input current
at maximum input voltage
VCC = MAX,
VI = 7 V
0.1
mA
IIH
High-level input current
VCC = MAX,
VI = 2.7 V
20
A
IIL
Low-level input current
VCC = MAX,
VI = 0.4 V
–0.4
mA
IOS
Short-circuit output current§
VCC = MAX
–30
–130
–30
–130
mA
ICC
Supply current
VCC = MAX,
See Note 4
19
30
19
24
mA
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
All typical values are at VCC = 5 V, TA = 25°C.
§ Not more than one output should be shorted at a time.
NOTE 4: ICC is measured with all outputs open; CLR grounded, following momentary connection to 4.5 V, N, G1, G2, and all data inputs grounded;
and CLK and M at 4.5 V.
timing requirements over recommended operating conditions (unless otherwise noted)
SN54LS173A
SN74LS173A
UNIT
MIN
MAX
MIN
MAX
UNIT
fclock
Input clock frequency
30
25
MHz
tw
Pulse duration
CLK or CLR
25
ns
Data enable (G1, G2)
35
tsu
Setup time
Data
17
ns
CLR (inactive state)
10
th
Hold time
Data enable (G1, G2)
0
ns
th
Hold time
Data
3
ns
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