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부품번호 | 54LS258B 기능 |
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기능 | QUAD 2-INPUT MULTIPLEXER | ||
제조업체 | Motorola Semiconductors | ||
로고 | |||
전체 4 페이지수
QUAD 2-INPUT MULTIPLEXER
WITH 3-STATE OUTPUTS
The LSTTL / MSI SN54 / 74LS257B and the SN54 / 74LS258B are Quad
2-Input Multiplexers with 3-state outputs. Four bits of data from two sources
can be selected using a Common Data Select input. The four outputs present
the selected data in true (non-inverted) form. The outputs may be switched to
a high impedance state with a HIGH on the common Output Enable (EO) In-
put, allowing the outputs to interface directly with bus oriented systems. It is
fabricated with the Schottky barrier diode process for high speed and is com-
pletely compatible with all Motorola TTL families.
• Schottky Process For High Speed
• Multiplexer Expansion By Tying Outputs Together
• Non-Inverting 3-State Outputs
• Input Clamp Diodes Limit High Speed Termination Effects
• Special Circuitry Ensures Glitch Free Multiplexing
• ESD > 3500 Volts
CONNECTION DIAGRAM DIP (TOP VIEW)
VCC E0 I0c I1c Zc I0d I1d Zd
16 15 14 13 12 11 10 9
SN54/74LS257B
VCC = PIN 16
GND = PIN 8
1 2 3 4 56 78
S I0a I1a Za I0b I1b Zb GND
VCC E0 I0c I1c Zc I0d I1d Zd
16 15 14 13 12 11 10 9
SN54/74LS258B
1 2 3 4 56 78
S I0a I1a Za I0b I1b Zb GND
NOTE:
The Flatpak version
has the same pinouts
(Connection Diagram) as
the Dual In-Line Package.
SN54/74LS257B
SN54/74LS258B
QUAD 2-INPUT MULTIPLEXER
WITH 3-STATE OUTPUTS
LOW POWER SCHOTTKY
16
1
16
1
16
1
J SUFFIX
CERAMIC
CASE 620-09
N SUFFIX
PLASTIC
CASE 648-08
D SUFFIX
SOIC
CASE 751B-03
ORDERING INFORMATION
SN54LSXXXJ
SN74LSXXXN
SN74LSXXXD
Ceramic
Plastic
SOIC
FAST AND LS TTL DATA
5-1
SN54/74LS257B D SN54/74LS258B
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Symbol
Parameter
Min Typ Max Unit
Test Conditions
VIH Input HIGH Voltage
2.0
Guaranteed Input HIGH Voltage for
V All Inputs
54
VIL Input LOW Voltage 74
0.7 Guaranteed Input LOW Voltage for
0.8 V All Inputs
VIK
VOH
Input Clamp Diode Voltage
Output HIGH Voltage
54
74
– 0.65 – 1.5
2.4 3.4
2.4 3.1
V VCC = MIN, IIN = – 18 mA
V VCC = MIN, IOH = MAX, VIN = VIH
V or VIL per Truth Table
VOL
IOZH
IOZL
IIH
Output LOW Voltage
54, 74
74
Output Off Current — HIGH
Output Off Current — LOW
Input HIGH Current
Other Inputs
S Inputs
Other Inputs
S Inputs
0.25 0.4
0.35 0.5
20
– 20
20
40
0.1
0.2
V IOL = 12 mA
V IOL = 24 mA
VCC = VCC MIN,
VIN = VIL or VIH
per Truth Table
µA VCC = MAX, VOUT = 2.7 V
µA VCC = MAX, VOUT = 0.4 V
µA VCC = MAX, VIN = 2.7 V
mA VCC = MAX, VIN = 7.0 V
IIL
Input LOW Current
All Inputs
– 0.4 mA VCC = MAX, VIN = 0.4 V
IOS
Short Circuit Current (Note 1)
– 30
Power Supply Current
Total, Output HIGH
LS257B
LS258B
– 130 mA VCC = MAX
10 mA
9.0
ICC
Total, Output LOW
LS257B
LS258B
16
14
mA VCC = MAX
Total, Output 3-State
LS257B
LS258B
19
16
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
mA
AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V) See SN54LS251 for Waveforms
Limits
Symbol
Parameter
Min Typ Max Unit
tPLH
tPHL
Propagation Delay, Data to Output
10
12
13
15
ns
tPLH
tPHL
Propagation Delay, Select to Output
14
14
21
21
ns
tPZH
Output Enable Time to HIGH Level
20 25 ns
tPZL
Output Enable Time to LOW Level
20 25 ns
tPLZ
Output Disable Time to LOW Level
16 25 ns
tPHZ
Output Disable Time from HIGH Level
18 25 ns
Test Conditions
Figures 1 & 2
Figures 1 & 2
CL = 45 pF
Figures 4 & 5
Figures 3 & 5
Figures 3 & 5
Figures 4 & 5
CL = 45 pF
RL = 667 Ω
CL = 5.0 pF
RL = 667 Ω
FAST AND LS TTL DATA
5-4
4페이지 | |||
구 성 | 총 4 페이지수 | ||
다운로드 | [ 54LS258B.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
54LS258 | TRI-STATE Quad 2-Data Selectors/Multiplexers (Rev. A) | Texas Instruments |
54LS258A | TRI-STATE Quad 2-Data Selectors/Multiplexers | National Semiconductor |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |