m48t18 STMicroelectronics, m48t18 Datasheet - Page 20

• Manufacturer Part Number: m48t18
• Description: 5v, 64kbit 8 Kb X 8 Timekeeper Sram
• Manufacturer: STMicroelectronics

DC and AC parameters
Note:
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This section summarizes the operating and measurement conditions, as well as the DC and
AC characteristics of the device. The parameters in the following DC and AC Characteristic
tables are derived from tests performed under the Measurement Conditions listed in the
relevant tables. Designers should check that the operating conditions in their projects match
the measurement conditions when using the quoted parameters.
Table 7.
Output Hi-Z is defined as the point where data is no longer driven.
Figure 11. AC testing load circuit
Table 8.
1. Effective capacitance measured with power supply at 5V; sampled only, not 100% tested.
2. At 25°C, f = 1MHz.
3. Outputs deselected.
Supply Voltage (V
Ambient Operating Temperature (T
Load Capacitance (C
Input Rise and Fall Times
Input Pulse Voltages
Input and Output Timing Ref. Voltages
Symbol
C
C
IO
IN
(3)
Input Capacitance
Input / Output Capacitance
Operating and AC measurement conditions
Capacitance
Parameter
CC
)
L
)
C L includes JIG capacitance
Parameter
DEVICE
UNDER
TEST
A
)
(1)(2)
1k
4.75 to 5.5
M48T08
0 to 70
0 to 3
100
1.5
5
5V
1.8k
C L = 100pF
Min
M48T18/T08Y
AI01019
OUT
4.5 to 5.5
0 to 70
0 to 3
100
1.5
5
Max
10
10
Unit
pF
Unit
°C
ns
V
V
V
pF
pF