ACT244 datasheet(7/8 Pages) ONSEMI

7 / 8 page

MC74AC244, MC74ACT244

http://onsemi.com

PACKAGE DIMENSIONS

TSSOP–20

DT SUFFIX

20 PIN PLASTIC TSSOP PACKAGE

CASE 948E–02

ISSUE A

DIM

MIN

MAX

MIN

MAX

INCHES

6.60

0.260

MILLIMETERS

4.30

4.50

0.169

0.177

1.20

0.047

0.05

0.15

0.002

0.006

0.50

0.75

0.020

0.030

0.65 BSC

0.026 BSC

0.27

0.37

0.011

0.015

0.09

0.20

0.004

0.008

0.09

0.16

0.004

0.006

0.19

0.30

0.007

0.012

0.19

0.25

0.007

0.010

6.40 BSC

0.252 BSC

___

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

PIN 1

IDENT

–T–

0.100 (0.004)

SECTION N–N

JJ1

–W–

SEATING

PLANE

–V–

–U–

0.10 (0.004)

V S

20X

REF

L/2

0.15 (0.006) T

DETAIL E

0.25 (0.010)

DETAIL E

6.40

0.252

---

0.15 (0.006) T

EIAJ–20

M SUFFIX

20 PIN PLASTIC EIAJ PACKAGE

CASE 967–01

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

0.70

0.90

0.028

0.035

---

0.81

---

0.032

_ 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).

110

0.13 (0.005)

0.10 (0.004)

VIEW P

DETAIL P

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