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74F189 Scheda tecnica(PDF) 3 Page - NXP Semiconductors

Il numero della parte 74F189
Spiegazioni elettronici  64-bit TTL bipolar RAM, inverting 3-State
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Produttore elettronici  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74F189 Scheda tecnica(HTML) 3 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
74F189A
64-bit TTL bipolar RAM, inverting (3-State)
1990 Feb 23
3
IEC/IEEE SYMBOL
1
15
14
13
12
11
RAM 16X4
10
9
6
7
4
5
2
3
A,2D
A
G1
1 EN [READ]
1 C2 [WRITE]
0
1
A
0
15
SF00301
FUNCTION TABLE
INPUTS
OUTPUT
OPERATING
CE
WE
Dn
Qn
MODE
L
H
X
Complement of stored
data
Read
L
L
L
High
impedance
Write “0”
H
L
H
High impedance
Write “1”
H
X
X
High impedance
Disable input
NOTES:
H = High voltage level
L = Low voltage level
X = Don’t care
LOGIC DIAGRAM
VCC = Pin 16
GND = Pin 8
Decoder
Drivers
A0
A1
A2
A3
Address
Decoder
16–word x
4–bit
memory cell
array
Data buffers
Output buffers
Q0Q1Q2Q3
D0 D1 D2 D3
WE
CE
1
15
14
13
3
2
4
6
10 12
57
9
11
SF00302
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device. Unless otherwise noted these limits are over the
operating free air temperature range.)
SYMBOL
PARAMETER
RATING
UNIT
VCC
Supply voltage
–0.5 to +7.0
V
VIN
Input voltage
–0.5 to +7.0
V
IIN
Input current
–30 to +5
mA
VOUT
Voltage applied to output in high output state
–0.5 to VCC
V
IOUT
Current applied to output in low output state
48
mA
Tamb
Operating free air temperature range
0 to +70
°C
Tstg
Storage temperature range
–65 to +150
°C


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