U637256
Test Configuration for Functional Check
5 V
x
VCC
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
480
VIH
VIL
VO
30 pF w
E
W
G
VSS
255
w: In measurement of tdis-times and ten-times the capacitance is 5 pF.
x: Between VCC and VSS must be connected a high frequency bypass capacitor 0.1 μF to avoid disturbances.
Capacitancee
Conditions
Symbol
Min.
Max.
Unit
VCC
VI
f
= 5.0 V
= VSS
= 1 MHz
= 25 °C
Input Capacitance
CI
8
pF
Output Capacitance
CO
7
pF
Ta
All Pins not under test must be connected with ground by capacitors.
Ordering Code
Example
U637256
D
K
70 G1
Type
Leadfree Option
G1 = Leadfree Green Package
Package
D = PDIP28 (600mil)
Access Time
70 = 70 ns
Operating Temperature Range
C = 0 to 70 °C
K = -40 to 85 °C
Device Marking (example)
ZMD
Product specification
Date of manufacture
U637256DK
70 Z 0425
G1
(The first 2 digits indicating
the year, and the last 2
digits the calendar week.)
Internal Code
Leadfree Green Package
Rev 1.1
August 15, 2006
STK Control #ML0054
10
SIMTEK [ SIMTEK CORPORATION ]
