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參數(shù)資料
| 型號： | SN74LS48D |
| 廠商： | MOTOROLA INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | BCD TO 7-SEGMENT DECODER |
| 中文描述： | LS SERIES, SEVEN SEGMENT DECODER/DRIVER, TRUE OUTPUT, PDSO16 |
| 封裝： | SOIC-16 |
| 文件頁數(shù)： | 2/3頁 |
| 文件大?。?/td> | 100K |
| 代理商： | SN74LS48D |
14
15
NUMERICAL DESIGNATIONS — RESULTANT DISPLAYS
0
1
2
3
4
5
6
7
8
9
10
11
12
13
NOTES:
(1) BI/RBO is wired-AND logic serving as blanking input (BI) and/or
ripple-blanking output (RBO). The blanking out (BI) must be open
or held at a HIGH level when output functions 0 through 15 are
desired, and ripple-blanking input (RBI) must be open or at a HIGH
level if blanking of a decimal 0 is not desired. X=input may be HIGH
or LOW.
(2) When a LOW level is applied to the blanking input (forced condition)
all segment outputs go to a LOW level, regardless of the state of any
other input condition.
(3) When ripple-blanking input (RBI) and inputs A, B, C, and D are at
LOW level, with the lamp test input at HIGH level, all segment
outputs go to a HIGH level and the ripple-blanking output (RBO)
goes to a LOW level (response condition).
(4) When the blanking input/ripple-blanking output (BI/RBO) is open or
held at a HIGH level, and a LOW level is applied to lamp-test input,
all segment outputs go to a LOW level.
TRUTH TABLE
SN54/74LS48
INPUTS
OUTPUTS
5-60
FAST AND LS TTL DATA
SN54/74LS48
PIN NAMES
LOADING
(Note a)
HIGH
0.5 U.L.
0.5 U.L.
0.5 U.L.
0.5 U.L.
1.2 U.L.
0.5 U.L.
LOW
A, B, C, D
RBI
LT
BI/RBO
BI
BCD Inputs
Ripple-Blanking (Active Low) Input
Lamp-Test (Active Low) Input
Blanking Input or Ripple-
Blanking Output (Active Low)
Blanking (Active Low) Input
Open-Collector
0.25 U.L.
0.25 U.L.
0.25 U.L.
0.75 U.L.
2(1) U.L.
0.25 U.L.
3.75 (1.25) U.L. (48)
NOTES:
a) Unit Load (U.L.) = 40
μ
A HIGH/1.6 mA LOW
b) Outut current measured at VOUT = 0.5 V
Output LOW drive factor is SN54LS/74LS48: 1.25 U.L. for Military (54), 3.75 U.L. for Commercial (74).
DECIMAL
OR
FUNCTION
LT
RBI
D
C
B
A
BI/RBO
a
b
c
d
e
f
g
NOTE
0
H
H
L
L
L
L
H
H
H
H
H
H
H
L
1
1
H
X
L
L
L
H
H
L
H
H
L
L
L
L
1
2
H
X
L
L
H
L
H
H
H
L
H
H
L
H
3
H
X
L
L
H
H
H
H
H
H
H
L
L
H
4
H
X
L
H
L
L
H
L
H
H
L
L
H
H
5
H
X
L
H
L
H
H
H
L
H
H
L
H
H
6
H
X
L
H
H
L
H
L
L
H
H
H
H
H
7
H
X
L
H
H
H
H
H
H
H
L
L
L
L
8
H
X
H
L
L
L
H
H
H
H
H
H
H
H
9
H
X
H
L
L
H
H
H
H
H
L
L
H
H
10
H
X
H
L
H
L
H
L
L
L
H
H
L
H
11
H
X
H
L
H
H
H
L
L
H
H
L
L
H
12
H
X
H
H
L
L
H
L
H
L
L
L
H
H
13
H
X
H
H
L
H
H
H
L
L
H
L
H
H
14
H
X
H
H
H
L
H
L
L
L
H
H
H
H
15
H
X
H
H
H
H
H
L
L
L
L
L
L
L
BI
X
X
X
X
X
X
L
L
L
L
L
L
L
L
2
RBI
H
L
L
L
L
L
L
L
L
L
L
L
L
L
3
LT
L
X
X
X
X
X
H
H
H
H
H
H
H
H
4
相關PDF資料 |
PDF描述 |
|---|---|
| SN74LS48N | BCD TO 7-SEGMENT DECODER |
| SN74LS490D | DUAL DECADE COUNTER |
| SN54LS490 | Octal Buffer/Line Driver, 3 State; Package: TSSOP 20 LEAD; No of Pins: 20; Container: Tape and Reel; Qty per Container: 2500 |
| SN54LS490J | DUAL DECADE COUNTER |
| SN74LS490N | 1A, 5V,±4% Tolerance, Negative Voltage Regulator, Ta = 0°C to +125&x0176;C; Package: TO-220, SINGLE GAUGE; No of Pins: 3; Container: Rail; Qty per Container: 50 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
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| SN74LS490N | 制造商:Motorola Inc 功能描述: 制造商:Panasonic Industrial Company 功能描述:IC 制造商:Rochester Electronics LLC 功能描述: |
| SN74LS4N | 制造商:Motorola Inc 功能描述: |
| SN74LS508N | 制造商:Texas Instruments 功能描述: |
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