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74F219A Fiches technique(PDF) 3 Page - NXP Semiconductors

No de pièce 74F219A
Description  64-bit TTL bipolar RAM, non-inverting 3-State
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Fabricant  PHILIPS [NXP Semiconductors]
Site Internet  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74F219A Fiches technique(HTML) 3 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
74F219A
64-bit TTL bipolar RAM, non-inverting (3-State)
1996 Jan 05
3
LOGIC SYMBOL
D0
D2 D3
D1
Q0 Q1 Q2 Q3
57
9
11
610 12
VCC = pin 16
GND = pin 8
4
A0
A1
A2
A3
CE
WE
1
15
14
13
2
3
SF00308
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
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
Q0 Q1 Q2 Q3
D0 D1 D2 D3
WE
CE
1
15
14
13
3
2
57
9
11
4
6
10 12
SF00309
FUNCTION TABLE
INPUTS
OUTPUT
OPERATING
CE
WE
Dn
Qn
MODE
L
H
X
Stored data
Read
L
L
L
High impedance
Write “0”
L
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


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