MC74LCX646 查看數據表（PDF） - ON Semiconductor

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MC74LCX646

Low−Voltage CMOS Octal Transceiver/Registered Transceiver

ON Semiconductor 

MC74LCX646

PACKAGE DIMENSIONS

DT SUFFIX

PLASTIC TSSOP PACKAGE

CASE 948H−01

ISSUE O

0.15 (0.006) T U S

24X K REF

0.10 (0.004) M T U S V S

2X L/2

24

L

PIN 1

IDENT.

1

13

B

−U−

12

0.15 (0.006) T U S

A

−V−

C

0.10 (0.004)

−T− SEATING

PLANE

D

G

H

−W−

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−.

MILLIMETERS

INCHES

DIM MIN MAX MIN MAX

A 7.70 7.90 0.303 0.311

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_

DETAIL E

K

J1 ÇÇÉÉÇÇÉÉK1ÇÇÉÉ

SECTION N−N

J

N

N

F

DETAIL E

0.25 (0.010)

M

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