參數(shù)資料
型號(hào): SN74ALS258ADRG4
廠商: TEXAS INSTRUMENTS INC
元件分類: 編、解碼器及復(fù)用、解復(fù)用
英文描述: ALS SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, INVERTED OUTPUT, PDSO16
封裝: GREEN, PLASTIC, SOIC-16
文件頁數(shù): 18/22頁
文件大?。?/td> 752K
代理商: SN74ALS258ADRG4
SN54ALS257A, SN54ALS258A, SN74ALS257A, SN74ALS258A, SN74AS257, SN74AS258
QUADRUPLE 2LINE TO 1LINE DATA SELECTORS/MULTIPLEXERS
WITH 3STATE OUTPUTS
SDAS124C APRIL 1982 REVISED AUGUST 1996
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
R1 = 500
,
R2 = 500
,
TA = MIN to MAX
UNIT
(INPUT)
(OUTPUT)
SN54ALS258A
SN74ALS258A
MIN
MAX
MIN
MAX
tPLH
A or B
Any Y
1
12
2
8
ns
tPHL
A or B
Any Y
2
9
2
7
ns
tPLH
A /B
Any Y
4
28
5
25
ns
tPHL
A /B
Any Y
5
25
6
20
ns
tPZH
OE
Any Y
3
20
4
18
ns
tPZL
OE
Any Y
5
21
5
18
ns
tPHZ
OE
Any Y
2
12
2
10
ns
tPLZ
OE
Any Y
3
37
4
18
ns
For conditions shown MIN or MAX, use the appropriate value specified under recommended operating conditions.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage applied to a disabled 3-state output
5.5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maximum power dissipation at TA = 55°C (in still air) (see Note 1): D package
1.3 W
. . . . . . . . . . . . . . . . . . .
N package
1.1 W
. . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: SN74AS257, SN74AS258
0
°C to 70°C
. . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: The maximum package power dissipation is calculated using a junction temperature of 150
°C and a board trace length of 750 mils,
except for the N package, which has a trace length of zero.
recommended operating conditions
SN74AS257
SN74AS258
UNIT
MIN
NOM
MAX
UNIT
VCC
Supply voltage
4.5
5
5.5
V
VIH
High-level input voltage
2
V
VIL
Low-level input voltage
0.8
V
IOH
High-level output current
15
mA
IOL
Low-level output current
48
mA
TA
Operating free-air temperature
0
70
°C
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