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參數(shù)資料
| 型號： | 74F189SJ |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | DRAM |
| 英文描述： | 64-Bit Random Access Memory with 3-STATE Outputs |
| 中文描述： | 16 X 4 STANDARD SRAM, 27 ns, PDSO16 |
| 封裝： | 5.30 MM, EIAJ TYPE2, SOP-16 |
| 文件頁數(shù)： | 3/10頁 |
| 文件大?。?/td> | 81K |
| 代理商： | 74F189SJ |
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
A0
15
SF00301
FUNCTION TABLE
INPUTS
OUTPUT
OPERATING
CE
WE
Dn
Q
n
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
V
=
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
4
6
WE
CE
1
15
14
13
3
2
10 12
5
7
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
V
CC
V
IN
I
IN
V
OUT
Supply voltage
–0.5 to +7.0
V
Input voltage
–0.5 to +7.0
V
Input current
–30 to +5
mA
Voltage applied to output in high output state
–0.5 to V
CC
V
I
OUT
Current applied to output in low output state
48
mA
T
amb
Operating free air temperature range
0 to +70
°
C
°
C
T
stg
Storage temperature range
–65 to +150
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