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PDF 54LS670 Data sheet ( Hoja de datos )
| Número de pieza | 54LS670 | |
| Descripción | 4 x 4 REGISTER FILE | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de 54LS670 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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4 x 4 REGISTER FILE
WITH 3-STATE OUTPUTS
The TTL / MSI SN54 / 74LS670 is a high-speed, low-power 4 x 4 Register
File organized as four words by four bits. Separate read and write inputs, both
address and enable, allow simultaneous read and write operation.
The 3-state outputs make it possible to connect up to 128 outputs to in-
crease the word capacity up to 512 words. Any number of these devices can
be operated in parallel to generate an n-bit length.
The SN54 / 74LS170 provides a similar function to this device but it features
open-collector outputs.
• Simultaneous Read/ Write Operation
• Expandable to 512 Words by n-Bits
• Typical Access Time to 20 ns
• 3-State Outputs for Expansion
• Typical Power Dissipation of 125 mW
CONNECTION DIAGRAM DIP (TOP VIEW)
VCC D1 WA WB EW ER Q1 Q2
16 15 14 13 12 11 10 9
NOTE:
The Flatpak version
has the same pinouts
(Connection Diagram) as
the Dual In-Line Package.
1 2 3 4 56 78
D2 D3 D4 RB RA Q4 Q3 GND
PIN NAMES
LOADING (Note a)
HIGH
LOW
D1 – D4
WA, WB
EW
RA, RB
ER
Q1 – Q4
Data Inputs
Write Address Inputs
Write Enable (Active LOW) Input
Read Address Inputs
Read Enable (Active LOW) Input
Outputs (Note b)
0.5 U.L.
0.5 U.L.
1.0 U.L.
0.5 U.L.
1.5 U.L.
65 (25) U.L.
0.25 U.L.
0.25 U.L.
0.5 U.L.
0.25 U.L.
0.75 U.L.
15 (7.5) U.L.
NOTES:
a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW.
b) The Output LOW drive factor is 7.5 U.L. for Military (54) and 15 U.L. for Commercial
(74) Temperature Ranges. The Output HIGH drive factor is 25 U.L. for Military and
65 U.L. for Commercial Temperature Ranges.
SN54/74LS670
4 x 4 REGISTER FILE
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
LOGIC SYMBOL
12 15 1 2 3
14 WA EW D1 D2 D3 D4
13 WB
5 RA
4 RB ER Q1 Q2 Q3 Q4
11 10 9 7 6
VCC = PIN 16
GND = PIN 8
FAST AND LS TTL DATA
5-597
1 page  
Case 751B-03 D Suffix
16-Pin Plastic
SO-16
-A-
16 9
-B-
P 0.25 (0.010) M
BM
1
8 PL
8
G
-T-
D16 PL
0.25 (0.010) M T B S
AS
C
SEATING
PLANE
K
R X 45°
MF
J
Case 648-08 N Suffix
16-Pin Plastic
-A-
16 9
B
18
F
C
S
-T-
SEATING
PLANE
L
H
G
D 16 PL
K
0.25 (0.010) M T A M
J
M
Case 620-09 J Suffix
-A- 16-Pin Ceramic Dual In-Line
16 9
-B-
18
CL
-T-
SEATING
PLANE
F
E
G
D 16 PL
N
0.25 (0.010) M T A S
K
M
J 16 PL
0.25 (0.010) M T B S
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION A AND B DO NOT INCLUDE MOLD
PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. 751BĆ01 IS OBSOLETE, NEW STANDARD
751BĆ03.
DIM
A
B
C
D
F
G
J
K
M
P
R
MILLIMETERS
MIN MAX
9.80
10.00
3.80
4.00
1.35
1.75
0.35
0.49
0.40
1.25
1.27 BSC
0.19
0.25
0.10
0°Ă
0.25
7°Ă
5.80
6.20
0.25
0.50
INCHES
MIN MAX
0.386
0.393
0.150
0.157
0.054
0.068
0.014
0.019
0.016
0.049
0.050 BSC
0.008
0.009
0.004
0°Ă
0.009
7°Ă
0.229
0.244
0.010
0.019
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION L" TO CENTER OF LEADS WHEN
FORMED PARALLEL.
4. DIMENSION B" DOES NOT INCLUDE MOLD
FLASH.
5. ROUNDED CORNERS OPTIONAL.
6. 648Ć01 THRU Ć07 OBSOLETE, NEW STANDARD
648Ć08.
DIM
A
B
C
D
F
G
H
J
K
L
M
S
MILLIMETERS
MIN MAX
18.80
19.55
6.35
6.85
3.69
4.44
0.39
0.53
1.02
1.77
2.54 BSC
1.27 BSC
0.21
0.38
2.80
3.30
7.50
0°
7.74
10°
0.51
1.01
INCHES
MIN MAX
0.740
0.770
0.250
0.270
0.145
0.175
0.015
0.021
0.040
0.070
0.100 BSC
0.050 BSC
0.008
0.015
0.110
0.130
0.295
0°
0.305
10°
0.020
0.040
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.
4. DIM F MAY NARROW TO 0.76 (0.030) WHERE
THE LEAD ENTERS THE CERAMIC BODY.
5. 620Ć01 THRU Ć08 OBSOLETE, NEW STANDARD
620Ć09.
DIM
A
B
C
D
E
F
G
J
K
L
M
N
MILLIMETERS
MIN MAX
19.05 19.55
6.10
7.36
Ċ 4.19
0.39
0.53
1.27 BSC
1.40
1.77
2.54 BSC
0.23
0.27
Ċ 5.08
7.62 BSC
0° 15°
0.39
0.88
INCHES
MIN MAX
0.750
0.770
0.240
0.290
Ċ 0.165
0.015
0.021
0.050 BSC
0.055
0.070
0.100 BSC
0.009
0.011
Ċ 0.200
0.300 BSC
0° 15°
0.015
0.035
FAST AND LS TTL DATA
5-601
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet 54LS670.PDF ] | |
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