M68AF031A

20/22

PART NUMBERING

Table 14. Ordering Information Scheme

For a list of available options (Speed, Package, etc...) or for further information on any aspect of this de-

vice, please contact the STMicroelectronics Sales Office nearest to you.

Example:

M68AF031

A

L

70 MS

6

T

Device Type

M68

Mode

A = Asynchronous

Operating Voltage

F = 4.5 to 5.5V

Array Organization

031 = 256 Kbit (32K x8)

Option 1

A = 1 Chip Enable

Option 2

L = L-Die

M = M-Die

Speed Class

55 = 55ns

70 = 70ns

Package

MS = SO28

B = PDIP28

N = TSOP28 8x13.4mm (Standard Pinout)

NS = TSOP28 8x13.4mm (Reverse Pinout)

Operative Temperature

1 = 0 to 70°C

6 = –40 to 85 °C

Shipping

T = Tape & Reel Packing

E = Lead-free and RoHS Package, Standard Packing

F = Lead-free and RoHS Package, Tape & Reel Packing