參數(shù)資料
型號: CY7C954DX
廠商: Cypress Semiconductor Corp.
英文描述: ATM HOTLink Transceiver(ATM 熱接插收發(fā)器)
中文描述: 自動柜員機的HOTLink收發(fā)器(自動柜員機熱接插收發(fā)器)
文件頁數(shù): 18/42頁
文件大?。?/td> 484K
代理商: CY7C954DX
CY7C954DX
PRELIMINARY
18
AC Test Loads and Waveforms
2.0V
0.8V
3.0V
0.0V
2.0V
0.8V
5.0V
OUTPUT
(a) TTL AC Test Load
(b) PECL AC Test Load
< 1 ns
< 1 ns
80%
20%
80%
20%
(c) TTL Input Test Waveform
(d) PECL Input Test Waveform
R1
R2
C
L
C
L
R
L
R1 = 500
R2 = 333
C
L
10 pF
(Includes fixture and
probe capacitance)
R
L
=50
C
< 5 pF
(Includes fixture and
probe capacitance)
V
IHE
3.0V
V
DD
1.33V
V
IHE
V
ILE
V
ILE
[5]
[5]
V
th
=1.5V
V
th
=1.5V
1 ns
1
ns
[5]
CY7C954DX Transmitter TTL Switching Characteristics
Over the Operating Range
Parameter
f
TS
t
TXCLK
t
TXCPWH
t
TXCPWL
t
TXCLKR
t
TXCLKF
t
TXA
t
TXDS
t
TXDH
t
TXENS
t
TXENH
t
TXRSS
t
TXRSH
t
TXAMS
t
TXAMH
t
TXOZA
Description
7C954DX
Unit
MHz
Min.
Max.
50
TXCLK Clock Cycle Frequency
TXCLK Period
20
ns
TXCLK HIGH Time
6.5
ns
TXCLK LOW Time
6.5
ns
TXCLK Rise Time
0.7
2
ns
TXCLK Fall Time
Flag Access Time From TXCLK
to Output
Transmit Data Set-Up Time to
TXCLK
Transmit Data Hold Time from TXCLK
Transmit Enable Set-Up Time to
TXCLK
Transmit Enable Hold Time from
TXCLK
Transmit FIFO Reset (TXRST*) Set-Up Time to
TXCLK
Transmit FIFO Reset (TXRST*) Hold Time from
TXCLK
Transmit Address Match Set-Up Time to
TXCLK
Transmit Address Match Hold Time from
TXCLK
Sample of Address Match TRUE by TXCLK
, Output High-Z to Active HIGH
or LOW
Sample of Address Match TRUE by TXCLK
to Output Valid
Sample of Address Match FALSE by TXCLK
to Output in High-Z
0.7
2
ns
2
15
ns
4
ns
1
ns
4
ns
1
ns
4
ns
1
ns
4
ns
1
ns
0
ns
t
TXOE
t
TXOAZ
Note:
5.
1.5
20
ns
1.5
20
ns
Cypress uses constant current (ATE) load configurations and forcing functions. This figure is for reference only.
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