MC74AC244, MC74ACT244
PACKAGE DIMENSIONS
TSSOP–20
DT SUFFIX
20 PIN PLASTIC TSSOP PACKAGE
CASE 948E–02
ISSUE A
20X K REF
NOTES:
ąă1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
M
S
S
V
0.10 (0.004)
T
U
S
U
0.15 (0.006) T
ąă2. CONTROLLING DIMENSION: MILLIMETER.
ąă3. 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.
K
K1
20
11
2X
L/2
ąă4. DIMENSION B DOES NOT INCLUDE
INTERLEAD FLASH OR PROTRUSION.
INTERLEAD FLASH OR PROTRUSION SHALL
NOT EXCEED 0.25 (0.010) PER SIDE.
ąă5. 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.
J J1
B
L
–U–
PIN 1
IDENT
SECTION N–N
1
10
0.25 (0.010)
ąă6. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
N
S
ąă7. DIMENSION A AND B ARE TO BE
DETERMINED AT DATUM PLANE -W-.
0.15 (0.006) T
U
M
A
–V–
MILLIMETERS
INCHES
MIN
DIM MIN
MAX
6.60
4.50
1.20
0.15
0.75
MAX
0.260
0.177
0.047
0.006
0.030
A
B
6.40
4.30
---
0.252
0.169
---
N
C
D
0.05
0.50
0.002
0.020
F
F
G
H
0.65 BSC
0.026 BSC
DETAIL E
0.27
0.09
0.09
0.19
0.19
0.37
0.20
0.16
0.30
0.25
0.011
0.004
0.004
0.007
0.007
0.015
0.008
0.006
0.012
0.010
J
–W–
J1
K
C
K1
L
6.40 BSC
0.252 BSC
0
G
D
M
0
8
8
_
_
_
_
H
DETAIL E
0.100 (0.004)
SEATING
PLANE
–T–
EIAJ–20
M SUFFIX
20 PIN PLASTIC EIAJ PACKAGE
CASE 967–01
NOTES:
ąă1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
ISSUE O
ąă2. CONTROLLING DIMENSION: MILLIMETER.
ąă3. 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.
L
E
20
11
Q
1
ąă4. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
H
E
E
_
M
ąă5. 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
L
1
10
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).
DETAIL P
Z
D
VIEW P
MILLIMETERS
INCHES
MIN
e
A
DIM MIN
MAX
2.05
0.20
0.50
0.27
12.80
5.45
MAX
0.081
0.008
0.020
0.011
0.504
0.215
c
A
---
0.05
0.35
0.18
12.35
5.10
---
0.002
0.014
0.007
0.486
0.201
A
1
b
c
D
E
e
A
1
b
1.27 BSC
0.050 BSC
M
0.10 (0.004)
0.13 (0.005)
H
7.40
0.50
1.10
8.20
0.85
1.50
0.291
0.020
0.043
0.323
0.033
0.059
E
L
L
E
M
0
10
0
10
_
0.035
0.032
_
_
_
Q
0.70
---
0.90
0.81
0.028
---
1
Z
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