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UT7C138 Datasheet(PDF) 7 Page - Aeroflex Circuit Technology

Part # UT7C138
Description  4Kx8/9 Radiation-Hardened Dual-Port Static RAM with Busy Flag
PDF  21 Pages
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Manufacturer  AEROFLEX [Aeroflex Circuit Technology]
Direct Link  http://www.aeroflex.com
Logo AEROFLEX - Aeroflex Circuit Technology

UT7C138 Datasheet(HTML) 7 Page - Aeroflex Circuit Technology

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7
AC CHARACTERISTICS READ CYCLE 1,2
(VDD = 5.0V±10%)
Notes:
1. Test conditions assume signal transition time of 5ns or less, timing reference levels of V DD /2, input pulse levels of 0.5V to VDD-0.5V, and output
loading of the specified IOL/IOH and 50-pF load capacitance.
2. AC test conditions use VOH/VOL=VDD/2 + 500mV.
SYMBOL
PARAMETER
7C138 - 45
7C139 - 45
MIN
MAX
7C138 - 55
7C139 - 55
MIN
MAX
UNIT
t
RC
Read cycle time
45
55
ns
tAA
Address to data valid2
45
55
ns
tOHA
Output hold from address change
5
5
ns
tACE
CE LOW to data valid
2
45
55
ns
t
DOE
OE LOW to data valid2
20
20
ns
tLZOE
OE LOW to low Z
0
0
ns
tHZOE
OE HIGH to high Z
20
20
ns
tLZCE
CE LOW to low Z
0
0
ns
t
HZCE
CE HIGH to high Z
20
20
ns



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