SN54HC257, SN54HC258, SN74HC257, SN74HC258
QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS
WITH 3 STATE OUTPUTS
SCLS224B − DECEMBER 1982 − REVISED SEPTEMBER 2003
D
Wide Operating Voltage Range of 2 V to 6 V
D
High-Current Inverting Outputs Drive Up To
D
D
15 LSTTL Loads
Low Power Consumption, 80-µA Max I
CC
’HC257 . . . Typical t
pd
= 9 ns
D
D
D
D
’HC258 . . . Typical t
pd
= 12 ns
±6-mA
Output Drive at 5 V
Low Input Current of 1
µA
Max
Provides Bus Interface from Multiple
Sources in High-Performance Systems
SN54HC257, SN54HC258 . . . FK PACKAGE
(TOP VIEW)
A/B
1A
1B
1Y
2A
2B
2Y
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
G
4A
4B
4Y
3A
3B
3Y
1A
A/B
NC
V
CC
G
1B
1Y
NC
2A
2B
3
4
5
6
7
8
2 1 20 19
18
17
16
15
14
9 10 11 12 13
SN54HC257, SN54HC258 . . . J PACKAGE
SN74HC257, SN74HC258 . . . D, N, NS, OR PW PACKAGE
(TOP VIEW)
4A
4B
NC
4Y
3A
NC − No internal connection
description/ordering information
ORDERING INFORMATION
TA
PDIP − N
PACKAGE†
Tube of 25
Tube of 40
Reel of 2500
SOIC − D
Reel of 250
Tube of 40
Reel of 2500
−40 C 85°C
−40°C to 85 C
SOP − NS
Reel of 2000
Tube of 90
Reel of 2000
Reel of 250
TSSOP − PW
Tube of 90
Reel of 2000
Reel of 250
CDIP − J
−55°C to 125°C
LCCC − FK
Tube of 55
Tube of 25
ORDERABLE
PART NUMBER
SN74HC257N
SN74HC258N
SN74HC257D
SN74HC257DR
SN74HC257DT
SN74HC258D
SN74HC258DR
SN74HC257NSR
SN74HC258NSR
SN74HC257PW
SN74HC257PWR
SN74HC257PWT
SN74HC258PW
SN74HC258PWR
SN74HC258PWT
SNJ54HC257J
SNJ54HC258J
SNJ54HC257FK
SNJ54HC258FK
SNJ54HC257J
SNJ54HC258J
SNJ54HC257FK
SNJ54HC258FK
HC258
HC257
HC258
HC257
HC258
HC257
TOP-SIDE
MARKING
SN74HC257N
SN74HC258N
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
On products compliant to MIL PRF 38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
Copyright
2003, Texas Instruments Incorporated
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
2Y
GND
NC
3Y
3B
1
SCLS224B − DECEMBER 1982 − REVISED SEPTEMBER 2003
SN54HC257, SN54HC258, SN74HC257, SN74HC258
QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS
WITH 3 STATE OUTPUTS
description/ordering information (continued)
These devices are designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized
systems. The 3-state outputs do not load the data lines when the output-enable (G) input is at a high logic level.
To ensure the high-impedance state during power up or power down, G should be tied to V
CC
through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
FUNCTION TABLE
INPUTS
G
H
L
L
L
L
A/B
X
L
L
H
H
A
X
L
H
X
X
B
X
X
X
L
H
OUTPUT Y
’HC257
Z
L
H
L
H
’HC258
Z
H
L
H
L
’HC257 logic diagram (positive logic)
G
15
A/B
1
1A
2
4
3
1Y
1B
2A
5
7
6
2Y
2B
3A
11
9
10
3Y
3B
4A
14
12
13
4Y
4B
Pin numbers shown are for the D, J, N, NS, and PW packages.
2
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
SN54HC257, SN54HC258, SN74HC257, SN74HC258
QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS
WITH 3 STATE OUTPUTS
SCLS224B − DECEMBER 1982 − REVISED SEPTEMBER 2003
’HC258 logic diagram (positive logic)
G
15
A/B
1
1A
2
4
3
1Y
1B
2A
5
7
6
2Y
2B
3A
11
9
10
3Y
3B
4A
14
12
13
4Y
4B
Pin numbers shown are for the D, J, N, NS, and PW packages.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage range, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Input clamp current, I
IK
(V
I
< 0 or V
I
> V
CC
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±20
mA
Output clamp current, I
OK
(V
O
< 0 or V
O
> V
CC
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±20
mA
Continuous output current, I
O
(V
O
= 0 to V
CC
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±35
mA
Continuous current through V
CC
or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±70
mA
Package thermal impedance,
θ
JA
(see Note 1): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W
NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108°C/W
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −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 package thermal impedance is calculated in accordance with JESD 51-7.
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
3
SCLS224B − DECEMBER 1982 − REVISED SEPTEMBER 2003
SN54HC257, SN54HC258, SN74HC257, SN74HC258
QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS
WITH 3 STATE OUTPUTS
recommended operating conditions (see Note 2)
SN54HC257,
SN54HC258
MIN
VCC
VIH
Supply voltage
VCC = 2 V
VCC = 4.5 V
VCC = 6 V
VCC = 2 V
VIL
VI
VO
∆t/∆v
Low-level input voltage
Input voltage
Output voltage
VCC = 2 V
VCC = 4.5 V
VCC = 6 V
VCC = 4.5 V
VCC = 6 V
0
0
2
1.5
3.15
4.2
0.3
0.9
1.2
VCC
VCC
1000
500
400
0
0
NOM
5
MAX
6
SN74HC257,
SN74HC258
MIN
2
1.5
3.15
4.2
0.5
1.35
1.8
VCC
VCC
1000
500
400
ns
V
V
V
V
NOM
5
MAX
6
V
UNIT
High-level input voltage
Input transition rise/fall time
TA
Operating free-air temperature
−55
125
−40
85
°C
NOTE 2: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs,
literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
MIN
2V
IOH = −20
µA
VOH
VI = VIH or VIL
IOH = −6 mA
IOH = −7.8 mA
IOL = 20
µA
VOL
VI = VIH or VIL
IOL = 6 mA
IOL = 7.8 mA
II
IOZ
ICC
Ci
VI = VCC or 0
VO = VCC or 0
VI = VCC or 0,
IO = 0
4.5 V
6V
4.5 V
6V
2V
4.5 V
6V
4.5 V
6V
6V
6V
6V
2 V to 6 V
3
1.9
4.4
5.9
3.98
5.48
TA = 25°C
TYP
1.998
4.499
5.999
4.3
5.8
0.002
0.001
0.001
0.17
0.15
±0.1
±0.01
0.1
0.1
0.1
0.26
0.26
±100
±0.5
8
10
MAX
SN54HC257,
SN54HC258
MIN
1.9
4.4
5.9
3.7
5.2
0.1
0.1
0.1
0.4
0.4
±1000
±10
160
10
MAX
SN74HC257,
SN74HC258
MIN
1.9
4.4
5.9
3.84
5.34
0.1
0.1
0.1
0.33
0.33
±1000
±5
80
10
nA
µA
µA
pF
V
V
MAX
UNIT
4
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
SN54HC257, SN54HC258, SN74HC257, SN74HC258
QUADRUPLE 2 LINE TO 1 LINE DATA SELECTORS/MULTIPLEXERS
WITH 3 STATE OUTPUTS
SCLS224B − DECEMBER 1982 − REVISED SEPTEMBER 2003
switching characteristics over recommended operating free-air temperature range, C
L
= 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC
2V
A or B
tpd
A/B
Any Y
Any Y
4.5 V
6V
2V
4.5 V
6V
2V
ten
G
Any Y
4.5 V
6V
2V
tdis
G
Any Y
4.5 V
6V
2V
tt
Any Y
4.5 V
6V
TA = 25°C
MIN
TYP
MAX
50
10
9
50
10
9
75
15
13
75
15
13
28
8
6
100
20
17
100
20
17
150
30
26
150
30
26
60
12
10
SN54HC257
MIN
MAX
150
30
25
150
30
25
225
45
38
225
45
38
90
18
15
SN74HC257
MIN
MAX
125
25
21
125
25
21
190
38
32
190
38
32
75
15
13
ns
ns
ns
ns
UNIT
switching characteristics over recommended operating free-air temperature range, C
L
= 150 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC
2V
A or B
tpd
A/B
Any Y
Any Y
4.5 V
6V
2V
4.5 V
6V
2V
ten
G
Any Y
4.5 V
6V
2V
tt
Any Y
4.5 V
6V
TA = 25°C
MIN
TYP
MAX
75
15
13
75
15
13
100
24
18
45
17
13
150
30
26
150
30
26
200
40
34
210
42
36
SN54HC257
MIN
MAX
245
45
38
245
45
38
300
60
51
315
63
53
SN74HC257
MIN
MAX
190
38
32
190
38
32
250
50
43
265
53
45
ns
ns
ns
UNIT
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
5
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