54F189 NSC [National Semiconductor], 54F189 Datasheet - Page 5

• Manufacturer Part Number: 54F189
• Description: 64-Bit Random Access Memory with TRI-STATEE Outputs
• Manufacturer: NSC [National Semiconductor]

Ordering Information
The device number is used to form part of a simplified purchasing code where the package type and temperature range are
defined as follows
Physical Dimensions
Temperature Range Family
Device Type
Package Code
74F
54F
SJ
D
P
F
S
L
e
e
e
e
e
e
e
e
Commercial
Military
Plastic DIP
Ceramic DIP
Flatpak
Leadless Ceramic Chip Carrier (LCC)
Small Outline SOIC JEDEC
Small Outline SOIC EIAJ
inches (millimeters)
20-Lead Ceramic Leadless Chip Carrier (L)
NS Package Number E20A
74F
189
5
S
C
X
Special Variations
Temperature Range
QB
C
L
X
e
e
e
e
Military (
Commercial (0 C to
Devices shipped in 13 reels
Military grade with environmental
and burn-in processing shipped
in tubes
b
40 C to
a
a
125 C)
70 C)