参数资料
型号: MC74AC244MR2
厂商: ON SEMICONDUCTOR
元件分类: 总线收发器
英文描述: AC SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDSO20
封装: EIAJ, SO-20
文件页数: 7/8页
文件大小: 172K
代理商: MC74AC244MR2
MC74AC244, MC74ACT244
http://onsemi.com
7
PACKAGE DIMENSIONS
TSSOP20
DT SUFFIX
20 PIN PLASTIC TSSOP PACKAGE
CASE 948E02
ISSUE A
DIM
A
MIN
MAX
MIN
MAX
INCHES
6.60
0.260
MILLIMETERS
B
4.30
4.50
0.169
0.177
C
1.20
0.047
D
0.05
0.15
0.002
0.006
F
0.50
0.75
0.020
0.030
G
0.65 BSC
0.026 BSC
H
0.27
0.37
0.011
0.015
J
0.09
0.20
0.004
0.008
J1
0.09
0.16
0.004
0.006
K
0.19
0.30
0.007
0.012
K1
0.19
0.25
0.007
0.010
L
6.40 BSC
0.252 BSC
M
0
8
0
8
__
_
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION A DOES NOT INCLUDE MOLD
FLASH, PROTRUSIONS OR GATE BURRS. MOLD
FLASH OR GATE BURRS SHALL NOT EXCEED
0.15 (0.006) PER SIDE.
4. DIMENSION B DOES NOT INCLUDE
INTERLEAD FLASH OR PROTRUSION.
INTERLEAD FLASH OR PROTRUSION SHALL NOT
EXCEED 0.25 (0.010) PER SIDE.
5. DIMENSION K DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.08 (0.003) TOTAL IN
EXCESS OF THE K DIMENSION AT MAXIMUM
MATERIAL CONDITION.
6. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
7. DIMENSION A AND B ARE TO BE
DETERMINED AT DATUM PLANE W.
110
11
20
PIN 1
IDENT
A
B
T
0.100 (0.004)
C
D
G
H
SECTION NN
K
K1
JJ1
N
M
F
W
SEATING
PLANE
V
U
S
U
M
0.10 (0.004)
V S
T
20X
REF
K
L
L/2
2X
S
U
0.15 (0.006) T
DETAIL E
0.25 (0.010)
DETAIL E
6.40
0.252
S
U
0.15 (0.006) T
EIAJ20
M SUFFIX
20 PIN PLASTIC EIAJ PACKAGE
CASE 96701
ISSUE O
DIM
MIN
MAX
MIN
MAX
INCHES
2.05
0.081
MILLIMETERS
0.05
0.20
0.002
0.008
0.35
0.50
0.014
0.020
0.18
0.27
0.007
0.011
12.35
12.80
0.486
0.504
5.10
5.45
0.201
0.215
1.27 BSC
0.050 BSC
7.40
8.20
0.291
0.323
0.50
0.85
0.020
0.033
1.10
1.50
0.043
0.059
0
0.70
0.90
0.028
0.035
0.81
0.032
A1
HE
Q1
LE
_ 10_
0
_ 10_
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS D AND E DO NOT INCLUDE
MOLD FLASH OR PROTRUSIONS AND ARE
MEASURED AT THE PARTING LINE. MOLD FLASH
OR PROTRUSIONS SHALL NOT EXCEED 0.15
(0.006) PER SIDE.
4. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
5. THE LEAD WIDTH DIMENSION (b) DOES NOT
INCLUDE DAMBAR PROTRUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL BE 0.08 (0.003)
TOTAL IN EXCESS OF THE LEAD WIDTH
DIMENSION AT MAXIMUM MATERIAL CONDITION.
DAMBAR CANNOT BE LOCATED ON THE LOWER
RADIUS OR THE FOOT. MINIMUM SPACE
BETWEEN PROTRUSIONS AND ADJACENT LEAD
TO BE 0.46 ( 0.018).
HE
A1
LE
Q1
_
c
A
Z
D
E
20
110
11
b
M
0.13 (0.005)
e
0.10 (0.004)
VIEW P
DETAIL P
M
L
A
b
c
D
E
e
L
M
Z
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