參數(shù)資料
型號: MC34C87P
廠商: MOTOROLA INC
元件分類: 通用總線功能
英文描述: ECONOLINE: RSZ/P - 1kVDC
中文描述: DUAL LINE DRIVER, PDIP16
封裝: PLASTIC, DIP-16
文件頁數(shù): 3/4頁
文件大?。?/td> 116K
代理商: MC34C87P
MC34C87
MOTOROLA
3
AC CHARACTERISTICS
(VCC = 4.5 to 5.5 V, TA = – 40 to + 85
°
C, unless otherwise stated)
Parameter
Symbol
Min
Typ
Max
Unit
Propagation Delay Input to Output (S1 Open)
tPLH
tPHL
6
12
ns
Output Skew (S1 Open)*
Skew
1.0
4
ns
Differential Output
Rise Time
Fall Time (S1 Open)
tTLH
tTHL
4
8
ns
Output Enable Time
(S1 Closed)
tPZH
tPZL
16
15
ns
Output Disable Time
(S1 Closed)
tPHZ
tPLZ
6
9
ns
* Skew: difference in propagation delays between complementary outputs.
AC TEST CIRCUIT AND SWITCHING TIME WAVEFORMS
47 pF
47 pF
47 pF
49.9
49.9
499
S1
1.5 V
INPUT
Figure 1. AC Test Circuit
OUTPUT A
1.5 V
tPHL
OUTPUT B
1.5 V
1.5 V
1.5 V
INPUT
1.5 V
1.5 V
— VOH
VOL
VOH
— VOL
tPLH
tPLH
tPHL
SKEW
3 V —
0 V
Figure 2. Propagation Delays and Skew Waveforms
Figure 3. Enable and Disable Times
OUTPUT A
1.5 V
tPZL
OUTPUT B
0.8 V
1.5 V
ENABLE INPUT
VOH – 0.5 V
2.0 V
— 1.5 V
— 1.5 V
VOL
VOH
tPLZ
tPZH
tPHZ
3 V —
0 V
VOL + 0.5 V
Figure 4. Differential Rise and Fall Times
OUTPUT
(DIFFERENTIAL)
90%
10%
tTHL
10%
90%
INPUT
0 V
tTLH
3 V —
TYPICAL APPLICATIONS
Figure 5. Two–Wire Balanced Systems (EIA–422–A)
+
DATA
DATA
OUTPUT
ENABLE
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