M68AF511AL Datasheet, PDF (6/18 Pages) STMicroelectronics – 4 Mbit (512K x8), 5V Asynchronous SRAM

M68AF511AL
DC AND AC PARAMETERS
This section summarizes the operating and mea-
surement 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 Measure-
ment Conditions listed in the relevant tables. De-
signers should check that the operating conditions
in their projects match the measurement condi-
tions when using the quoted parameters.
Table 3. Operating and AC Measurement Conditions
Parameter
V_CC Supply Voltage
Ambient Operating Temperature
Range 1: Commercial
Range 6: Industrial
Load Capacitance (C_L)
Output Circuit Protection Resistance (R₁)
Load Resistance (R₂)
Input Rise and Fall Times
Input Pulse Voltages
Input and Output Timing Ref. Voltages
Output Transition Timing Ref. Voltages
M68AF511AL
4.5 to 5.5V
0 to 70°C
–40 to 85°C
100pF
3.0kΩ
3.1kΩ
1ns/V
0 to V_CC
V_CC/2
V_RL = 0.3V_CC; V_RH = 0.7V_CC
Figure 5. AC Measurement I/O Waveform
Figure 6. AC Measurement Load Circuit
VCC
I/O Timing Reference Voltage
VCC
0V
VCC/2
Output Transition Timing Reference Voltage
VCC
0V
0.7VCC
0.3VCC
AI05910
DEVICE
UNDER
TEST
R1
CL
R2
OUT
CL includes probe and 1 TTLcapacitance
AI05832
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