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ꢊ ꢋꢌꢍ ꢎꢋꢏ ꢐ ꢑ ꢆ ꢒꢐ ꢓꢁꢑ ꢔ ꢕ ꢖ ꢒꢐ ꢓꢁꢑ ꢍꢌꢔꢌ ꢀꢑ ꢐꢑ ꢅꢔꢕ ꢎꢀꢗ ꢘꢋ ꢐꢔ ꢓꢏ ꢐꢑ ꢙꢑ ꢎ
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SCLS224B − DECEMBER 1982 − REVISED SEPTEMBER 2003
D
D
Wide Operating Voltage Range of 2 V to 6 V
D
D
D
D
’HC258 . . . Typical t = 12 ns
pd
6-mA Output Drive at 5 V
High-Current Inverting Outputs Drive Up To
15 LSTTL Loads
Low Input Current of 1 µA Max
Provides Bus Interface from Multiple
Sources in High-Performance Systems
D
Low Power Consumption, 80-µA Max I
CC
D
’HC257 . . . Typical t = 9 ns
pd
SN54HC257, SN54HC258 . . . J PACKAGE
SN54HC257, SN54HC258 . . . FK PACKAGE
(TOP VIEW)
SN74HC257, SN74HC258 . . . D, N, NS, OR PW PACKAGE
(TOP VIEW)
A/B
1A
V
CC
G
1
2
3
4
5
6
7
8
16
15
14
13
3
2
1 20 19
18
4A
4B
NC
4Y
3A
1B
1Y
NC
2A
2B
4
5
6
7
8
1B
4A
4B
17
16
15
14
1Y
2A
12 4Y
11
10
9
2B
3A
3B
3Y
2Y
9 10 11 12 13
GND
NC − No internal connection
description/ordering information
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
†
PACKAGE
T
A
MARKING
SN74HC257N
SN74HC258N
SN74HC257N
PDIP − N
SOIC − D
SOP − NS
Tube of 25
SN74HC258N
Tube of 40
Reel of 2500
Reel of 250
Tube of 40
Reel of 2500
SN74HC257D
SN74HC257DR
SN74HC257DT
SN74HC258D
HC257
HC258
SN74HC258DR
SN74HC257NSR
SN74HC258NSR
SN74HC257PW
SN74HC257PWR
SN74HC257PWT
SN74HC258PW
SN74HC258PWR
SN74HC258PWT
SNJ54HC257J
SNJ54HC258J
SNJ54HC257FK
HC257
HC258
−40°C to 85°C
Reel of 2000
Tube of 90
Reel of 2000
Reel of 250
Tube of 90
Reel of 2000
Reel of 250
HC257
HC258
TSSOP − PW
SNJ54HC257J
SNJ54HC258J
SNJ54HC257FK
CDIP − J
Tube of 25
Tube of 55
−55°C to 125°C
LCCC − FK
SNJ54HC258FK
SNJ54HC258FK
†
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.
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Copyright 2003, Texas Instruments Incorporated
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