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54LS148 View Datasheet(PDF) - Texas Instruments

Part NameDescriptionManufacturer
54LS148 10-LINE TO 4-LINE AND 8-LINE TO 3-LINE PRIORITY ENCODEERS TI
Texas Instruments TI
54LS148 Datasheet PDF : 24 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
SN54147, SN54148, SN54LS147, SN54LS148
SN74147, SN74148 (TIM9907), SN74LS147, SN74LS148
10ĆLINE TO 4ĆLINE AND 8ĆLINE TO 3ĆLINE PRIORITY ENCODERS
SDLS053B − OCTOBER 1976 − REVISED MAY 2004
SN54LS147, SN74LS147 switching characteristics, VCC = 5 V, TA = 255C (see Figure 2)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
WAVEFORM
TEST
CONDITIONS
MIN TYP MAX
tPLH
Any
tPHL
tPLH
Any
tPHL
Any
In-phase output
CL = 15 pF,
RL = 2 k
Any
Out-of-phase output
12
18
12
18
21
33
15
23
UNIT
ns
ns
SN54LS148, SN74LS148 switching characteristics, VCC = 5 V, TA = 255C (see Figure 2)
PARAMETER†
FROM
(INPUT)
TO
(OUTPUT)
WAVEFORM
TEST
CONDITIONS
MIN TYP MAX
tPLH
tPHL
1–7
A0, A1, or A2
tPLH
tPHL
1–7
A0, A1, or A2
tPLH
0–7
EO
tPHL
tPLH
0–7
GS
tPHL
tPLH
tPHL
EI
A0, A1, or A2
tPLH
EI
GS
tPHL
tPLH
EI
EO
tPHL
tPLH = propagation delay time, low-to-high-level output
tPHL = propagation delay time, high-to-low-level output
In-phase output
Out-of-phase output
Out-of-phase output
In-phase output
In-phase output
In-phase output
In-phase output
CL = 15 pF,
RL = 2 k
14
18
15
25
20
36
16
29
7
18
25
40
35
55
9
21
16
25
12
25
12
17
14
36
12
21
23
35
UNIT
ns
ns
ns
ns
ns
ns
ns
10
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