參數(shù)資料
型號(hào)： SN54LS126AFK
廠商： Texas Instruments, Inc.
英文描述： QUADRUPLE BUS BUFFERS WITH 3-STATE OUTPUTS
中文描述： 翻兩番總線緩沖器，具有三態(tài)輸出
文件頁(yè)數(shù)： 6/18頁(yè)
文件大?。?/td> 580K
代理商： SN54LS126AFK
SN54125, SN54126, SN54LS125A, SN54LS126A,
SN74125, SN74126, SN74LS125A, SN74LS126A
QUADRUPLE BUS BUFFERS WITH 3-STATE OUTPUTS
SDLS044A
–
DECEMBER 1983
–
REVISED MARCH 2002
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions
SN54LS125A
SN54LS126A
SN74LS125A
SN74LS126A
UNIT
MIN
NOM
MAX
MIN
NOM
MAX
VCC
VIH
VIL
IOH
IOL
TA
Supply voltage
4.5
5
5.5
4.75
5
5.25
V
High-level input voltage
2
2
V
Low-level input voltage
0.7
0.8
V
High-level output current
–
1
–
2.6
mA
Low-level output current
12
24
mA
°
C
Operating free-air temperature
–
55
125
0
70
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54LS125A
SN54LS126A
TYP
SN74LS125A
SN74LS126A
TYP
UNIT
MIN
MAX
–
1.5
MIN
MAX
–
1.5
VIK
VCC = MIN,
VCC = MIN,
VIH = 2 V
II =
–
18 mA
VIL = 0.7 V,
VIL = 0.8 V
VIL = 0.7 V,
VIL = 0.8 V,
VIL = 0.8 V,
V
VOH
IOH =
–
1 mA
IOH =
–
2.6 mA
IOL = 12 mA
IOL = 12 mA
IOL = 24 mA
VO = 2.4 V
VO = 0.4 V
VO = 2.4 V
VO = 0.4 V
2.4
V
2.4
VCC = MIN,
VIH= 2 V
VIH = 2 V
0.25
0.4
VOL
0.25
0.4
V
0.35
0.5
VIL= 0 7 V
VIL = 0.7 V
20
IOZ
VCC = MAX,
VIH = 2 V,
–
20
μ
A
VIL= 0 8 V
VIL = 0.8 V
20
–
20
II
IIH
VCC = MAX,
VCC = MAX,
VCC = MAX,
VI = 0.4 V
VCC = MAX
VCC = MAX
(see Note 4)
VI = 7 V
VI = 2.7 V
’
LS125A-G inputs
0.1
0.1
mA
μ
A
mA
20
20
IIL
–
0.2
–
0.2
’
LS125A-A inputs;
’
LS126A All inputs
–
0.4
–
0.4
mA
IOS
§
–
40
–
225
–
40
–
225
mA
ICC
’
LS125A
’
LS126A
11
12
20
22
11
12
20
22
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, and the duration of the short circuit should not exceed one second.
NOTE 4: Data inputs = 0 V; output control = 4.5 V for
’
LS125A and 0 V for
’
LS126A.
switching characteristics, V
CC
= 5 V, T
A
= 25
°
C (see Figure 1)
PARAMETER
TEST CONDITIONS
SN54LS125A
SN74LS125A
SN54LS126A
SN74LS126A
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
RL= 667
RL = 667
,
CL= 45 pF
CL = 45 F
9
15
9
15
ns
7
18
8
18
RL= 667
RL = 667
,
CL= 45 pF
CL = 45 F
12
20
16
25
ns
15
25
21
35
RL= 667
RL = 667
,
CL= 5 pF
CL = 5 F
20
25
ns
20
25
The SN54125, SN54126, SN74125,
SN74126, and SN54LS126A are
obsolete and are no longer supplied.
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