74HC243NB 查看數據表（PDF） - Philips Electronics
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74HC243NB Datasheet PDF : 8 Pages
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Philips Semiconductors
Quad bus transceiver; 3-state
Product specification
74HC/HCT243
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: bus driver
ICC category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
SYMBOL PARAMETER
tPHL/ tPLH
tPZH/ tPZL
tPHZ/ tPLZ
tTHL/ tTLH
propagation delay
An to Bn;
Bn to An
3-state output enable time
OEA to An or Bn;
OEB to An or Bn
3-state output disable time
OEA to An or Bn;
OEB to An or Bn
output transition time
Tamb (°C)
TEST CONDITIONS
74HC
+25
−40 to +85
−40 to +125
UNIT VCC WAVEFORMS
(V)
min. typ. max. min. max. min. max.
22 90
8 18
6 15
115
135 ns 2.0 Fig.5
23
27
4.5
20
23
6.0
50 150
190
18 30
38
14 26
33
225 ns
45
38
2.0 Figs 6 and 7
4.5
6.0
61 165
205
22 33
41
18 28
35
250 ns
50
43
2.0 Figs 6 and 7
4.5
6.0
14 60
75
5 12
15
4 10
13
90 ns 2.0 Fig.5
18
4.5
15
6.0
December 1990
5
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