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PDF MC74HC245A Data sheet ( Hoja de datos )
| Número de pieza | MC74HC245A | |
| Descripción | Octal 3-State Noninverting Bus Transceiver | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MC74HC245A (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Octal 3-State Noninverting
Bus Transceiver
High–Performance Silicon–Gate CMOS
The MC54/74HC245A is identical in pinout to the LS245. The device
inputs are compatible with standard CMOS outputs; with pullup resistors,
they are compatible with LSTTL outputs.
The HC245A is a 3–state noninverting transceiver that is used for 2–way
asynchronous communication between data buses. The device has an
active–low Output Enable pin, which is used to place the I/O ports into
high–impedance states. The Direction control determines whether data
flows from A to B or from B to A.
• Output Drive Capability: 15 LSTTL Loads
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2 to 6 V
• Low Input Current: 1 µA
• High Noise Immunity Characteristic of CMOS Devices
• In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
• Chip Complexity: 308 FETs or 77 Equivalent Gates
MC54/74HC245A
20
1
J SUFFIX
CERAMIC PACKAGE
CASE 732–03
20
1
20
1
N SUFFIX
PLASTIC PACKAGE
CASE 738–03
DW SUFFIX
SOIC PACKAGE
CASE 751D–04
ORDERING INFORMATION
MC54HCXXXAJ
MC74HCXXXAN
MC74HCXXXADW
Ceramic
Plastic
SOIC
A
DATA
PORT
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
DIRECTION 1
OUTPUT ENABLE 19
LOGIC DIAGRAM
PIN 10 = GND
PIN 20 = VCC
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11 B8
B
DATA
PORT
PIN ASSIGNMENT
DIRECTION 1
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
GND 10
20 VCC
19 OUTPUT ENABLE
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11 B8
FUNCTION TABLE
Control Inputs
Output
Enable Direction
Operation
L L Data Transmitted from Bus B to Bus A
L H Data Transmitted from Bus A to Bus B
H X Buses Isolated (High–Impedance State)
X = don’t care
10/95
© Motorola, Inc. 1995
1 REV 6
1 page  
MC54/74HC245A
20
1
A
F
H
D
SEATING
PLANE
–A–
20
1
–T–
SEATING
PLANE
E
GF
11
10
B
OUTLINE DIMENSIONS
J SUFFIX
CERAMIC PACKAGE
CASE 732–03
ISSUE E
CL
N
K
G
J
M
NOTES:
1. LEADS WITHIN 0.25 (0.010) DIAMETER, TRUE
POSITION AT SEATING PLANE, AT MAXIMUM
MATERIAL CONDITION.
2. DIMENSION L TO CENTER OF LEADS WHEN
FORMED PARALLEL.
3. DIMENSIONS A AND B INCLUDE MENISCUS.
MILLIMETERS
INCHES
DIM MIN MAX MIN MAX
A 23.88 25.15 0.940 0.990
B 6.60 7.49 0.260 0.295
C 3.81 5.08 0.150 0.200
D 0.38 0.56 0.015 0.022
F 1.40 1.65 0.055 0.065
G 2.54 BSC
0.100 BSC
H 0.51 1.27 0.020 0.050
J 0.20 0.30 0.008 0.012
K 3.18 4.06 0.125 0.160
L 7.62 BSC
0.300 BSC
M 0_ 15_ 0_ 15_
N 0.25 1.02 0.010 0.040
N SUFFIX
PLASTIC PACKAGE
CASE 738–03
11 ISSUE E
B
10
CL
K
N
D 20 PL
0.25 (0.010) M T A M
M
J 20 PL
0.25 (0.010) M
TBM
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. DIMENSION B DOES NOT INCLUDE MOLD
FLASH.
INCHES
MILLIMETERS
DIM MIN MAX MIN MAX
A 1.010 1.070 25.66 27.17
B 0.240 0.260 6.10 6.60
C 0.150 0.180 3.81 4.57
D 0.015 0.022 0.39 0.55
E 0.050 BSC
1.27 BSC
F 0.050 0.070 1.27 1.77
G 0.100 BSC
2.54 BSC
J 0.008 0.015 0.21 0.38
K 0.110 0.140 2.80 3.55
L 0.300 BSC
7.62 BSC
M 0_ 15_ 0_ 15_
N 0.020 0.040 0.51 1.01
DW SUFFIX
–A–
20 11
PLASTIC SOIC PACKAGE
CASE 751D–04
ISSUE E
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
–B– 10X P
4. MAXIMUM MOLD PROTRUSION 0.150
(0.006) PER SIDE.
0.010 (0.25) M B M
5. DIMENSION D DOES NOT INCLUDE
DAMBAR PROTRUSION. ALLOWABLE
1 10
DAMBAR PROTRUSION SHALL BE 0.13
(0.005) TOTAL IN EXCESS OF D DIMENSION
AT MAXIMUM MATERIAL CONDITION.
20X D
0.010 (0.25) M T A S B S
J
F
18X G
C
–T–
SEATING
PLANE
K
M
R X 45_
MILLIMETERS
INCHES
DIM MIN MAX MIN MAX
A 12.65 12.95 0.499 0.510
B 7.40 7.60 0.292 0.299
C 2.35 2.65 0.093 0.104
D 0.35 0.49 0.014 0.019
F 0.50 0.90 0.020 0.035
G 1.27 BSC
0.050 BSC
J 0.25 0.32 0.010 0.012
K 0.10 0.25 0.004 0.009
M 0_ 7_ 0_ 7_
P 10.05 10.55 0.395 0.415
R 0.25 0.75 0.010 0.029
High–Speed CMOS Logic Data
DL129 — Rev 6
5
MOTOROLA
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| PDF Descargar | [ Datasheet MC74HC245A.PDF ] | |
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