UPD43256B-A NEC [NEC], UPD43256B-A Datasheet - Page 9

• Manufacturer Part Number: UPD43256B-A
• Description: 256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT
• Manufacturer: NEC [NEC]

AC Characteristics (Recommended operating conditions unless otherwise noted)
AC Test Conditions
Input waveform (Rise/fall time
Output waveform
Output load
Input pulse levels
AC characteristics with notes should be measured with the output load shown in
Figure 1 and Figure 2.
I/O (Output)
PD43256B-L, 43256B-LL:
PD43256B-A, 43256B-B : 1TTL + 100 pF
0.8 V to 2.2 V:
0.5 V to 2.2 V:
Remark
990
(For t
C
L
includes capacitances of the probe and jig, and stray capacitances.
1.5 V
1.5 V
AA
PD43256B-L, 43256B-LL
PD43256B-A, 43256B-B
Figure 1
, t
ACS
+5 V
, t
OE
1.8 k
5 ns)
, t
100 pF
C
L
OH
)
Test points
Test points
I/O (Output)
(For t
CHZ
, t
1.5 V
1.5 V
990
CLZ
Figure 2
, t
OHZ
, t
OLZ
, t
+5 V
WHZ
1.8 k
, t
PD43256B
5 pF
C
OW
L
)
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