MC74AC640DWR2 查看數據表（PDF） - ON Semiconductor

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MC74AC640DWR2

Octal 3-State Inverting Transciever1

ON Semiconductor 

20

1

Z

D

e

b

0.13 (0.005) M

MC74ACT640

PACKAGE DIMENSIONS

EIAJ–20

M SUFFIX

20 PIN PLASTIC EIAJ PACKAGE

CASE 967–01

ISSUE O

11

E HE

10

A

LE

Q1

M_

L

DETAIL P

VIEW P

c

A1

0.10 (0.004)

NOTES:

ąă1. DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982.

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.

ąă4. TERMINAL NUMBERS ARE SHOWN FOR

REFERENCE ONLY.

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 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).

MILLIMETERS

INCHES

DIM MIN MAX MIN MAX

A

--- 2.05 --- 0.081

A1 0.05 0.20 0.002 0.008

b 0.35 0.50 0.014 0.020

c 0.18 0.27 0.007 0.011

D 12.35 12.80 0.486 0.504

E 5.10 5.45 0.201 0.215

e

1.27 BSC

0.050 BSC

HE 7.40 8.20 0.291 0.323

L 0.50 0.85 0.020 0.033

LE 1.10 1.50 0.043 0.059

M

0 _ 10 _ 0 _ 10 _

Q1 0.70 0.90 0.028 0.035

Z

--- 0.81 --- 0.032

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