M87C257-12F1 STMicroelectronics, M87C257-12F1 Datasheet - Page 12

• Manufacturer Part Number: M87C257-12F1
• Description: IC EPROM 256KBIT 120NS 28CDIP
• Manufacturer: STMicroelectronics

Specifications of M87C257-12F1

• Format - Memory: EPROMs
• Memory Type: UV EPROM
• Memory Size: 256K (32K x 8)
• Speed: 120ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-CDIP (0.600", 15.24mm) Window
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DC and AC parameters
4
12/22
DC and AC parameters
This section summarizes the operating and measurement conditions, and the DC and AC
characteristics of the device. The parameters in the DC and AC Characteristic tables that
follow are derived from tests performed under the Measurement Conditions summarized in
the relevant tables. Designers should check that the operating conditions in their circuit
match the measurement conditions when relying on the quoted parameters.
Table 5.
Figure 5.
Figure 6.
Input Rise and Fall Times
Input Pulse Voltages
Input and Output Timing Ref. Voltages
AC measurement conditions
AC testing input output waveform
AC testing load circuit
High Speed
Standard
2.4V
0.4V
C L = 30pF for High Speed
C L = 100pF for Standard
C L includes JIG capacitance
DEVICE
3V
0V
UNDER
TEST
1.3V
High Speed
1N914
3.3k
0 to 3V
C L
1.5V
10ns
OUT
AI01823B
1.5V
2.0V
0.8V
AI01822
0.4V to 2.4V
0.8V and 2V
Standard
20ns
M87C257