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零件编号
产品描述 (功能)
NTE6850 查看數據表(PDF) - NTE Electronics
零件编号
产品描述 (功能)
生产厂家
NTE6850
Integrated Circuit NMOS, Asynchronous Communications Interface Adapter
NTE Electronics
NTE6850 Datasheet PDF : 3 Pages
1
2
3
Bus Timing Characteristics:
(V
L
≤
4V, V
H
≥
2.4V, measurement points 0.8V and 2V unless
otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Cycle Time
Pulse Width, E Low
Pulse Width, E High
Clock Rise and Fall Time
Address Hold Time
Address Setup Time Before E
Chip Select Setup Time Before E
Chip Select Hold Time
Read Data Hold Time
Write Data Hold Time
Output data Delay Time
Input Data Setup Time
t
cyc
PW
EL
PW
EH
t
r
, t
f
t
AH
t
AS
t
CS
t
CH
t
DHR
t
DHW
t
DHW
t
DSW
Note 3
1.0
–
10.0
µ
s
430
–
9500 ns
450
–
9500 ns
– –
25 ns
10
– –
ns
80
– –
ns
80
– –
ns
10
– –
ns
20
–
50 ns
10
– –
ns
– –
290 ns
165
– –
ns
Note 3. The data bus output buffers are no longer sourcing or sinking current by t
DHR
max (High
Impedance).
Pin Connection Diagram
V
SS
1
Rx Data
2
Cx Clk
3
Tx Clk
4
RTS
5
Tx Data
6
IRQ
7
CS0
8
CS2
9
CS1
10
RS
11
V
DD
12
24
CTS
23
DCD
22
D0
21
D1
20
D2
19
D3
18
D4
17
D5
16
D6
15
D7
14
E
13
R/W
24
13
1
12
1.300 (33.02)
Max
.100 (2.54)
1.100 (27.94)
.225
(5.73)
Max
.520
(13.2)
.126
(3.22)
Min
.600
(15.24)
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