T ....................................................... Case temperature.
C
T ....................................................... Ambient temperature.
A
V
V
.................................................... Positive supply voltage.
CC
...................................................... Positive input clamp voltage.
IC
O/V ..................................................... Latch-up over-voltage.
6.5.1 Timing parameter abbreviations. All timing abbreviations use lower case characters with upper case character
subscripts. The initial character is always "t" and is followed by four descriptors. These characters specify two signal points
arranged in a "from-to" sequence that define a timing interval. The two descriptors for each signal specify the signal name
and the signal transitions. Thus the format is:
t
X
X
X
X
Signal name from which interval is derived
Transition direction for first signal
Signal name to which interval is defined
Transition direction for second signal
a. Signal definitions:
A = Address
D = Data in
Q = Data out
W = Write enable
E = Chip enable
O = Output enable
b. Transition definitions:
H = Transition to high
L = Transition to low
V = Transition to valid
X = Transition to invalid or don't care
Z = Transition to off (high impedance)
6.5.2.1 Timing limits. The table of timing values shows either a minimum or a maximum limit for each parameter. Input
requirements are specified from the external system point of view. Thus, address setup time is shown as a minimum since
the system must supply at least that much time (even though most devices do not require it). On the other hand, responses
from the memory are specified from the device point of view. Thus, the access time is shown as a maximum since the
device never provides data later than that time.
6.5.3 Waveforms.
6.6 Sources of supply.
6.6.1 Sources of supply for device classes Q and V. Sources of supply for device classes Q and V are listed in
QML-38535. The vendors listed in QML-38535 have submitted a certificate of compliance (see 3.6 herein) to DSCC-VA and
have agreed to this drawing.
6.6.2 Approved sources of supply for device class M. Approved sources of supply for class M are listed in MIL-HDBK-
103. The vendors listed in MIL-HDBK-103 have agreed to this drawing and a certificate of compliance (see 3.6 herein) has
been submitted to and accepted by DSCC-VA.
SIZE
STANDARD
5962-89598
A
MICROCIRCUIT DRAWING
DEFENSE SUPPLY CENTER COLUMBUS
COLUMBUS, OHIO 43216-5000
REVISION LEVEL
L
SHEET
42
DSCC FORM 2234
APR 97
TEMIC [ TEMIC SEMICONDUCTORS ]
