U634H256
Test Configuration for Functional Check
5 V
Y
VCCX
VCAP
A0
A1
A2
A3
A4
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
A5
480
A6
VIH
VIL
A7
A8
A9
A10
A11
A12
A13
A14
VO
HSB
30 pF x
HSB
E
W
255
G
VSS
x: In measurement of tdis-times and ten-times the capacitance is 5 pF.
y: 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
= 5.0 V
= VSS
Input Capacitance
CI
8
pF
VI
f
= 1 MHz
= 25 °C
Output Capacitance
CO
7
pF
Ta
All Pins not under test must be connected with ground by capacitors.
Ordering Code
Example
U634H256
S
C
25
Type
Leadfree Option
blank= Standard Package
Package
G1 = Leadfree Green Package z
D1= PDIP32 (600 mil)
S = SOP32 (300mil)
Access Time
25 = 25 ns
Operating Temperature Range
C = 0 to 70 °C
35 = 35 ns (C/K Type on special request)
45 = 45 ns z
K = -40 to 85 °C
A = -40 to 125 °C (only 35 ns and SOP32 package)
M = -55 to 125 °C (only 35 ns and SOP32 package)
z: on special request
Device Marking (example)
Product specification
ZMD
Date of manufacture
U634H256SC
25 Z 0425
G1
(The first 2 digits indicating
the year, and the last 2
digits the calendar week.)
Internal Code
Leadfree Green Package
10
April 21, 2004
ZMD [ Zentrum Mikroelektronik Dresden AG ]
