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| 74HC242 Datasheet, PDF (5/7 Pages) NXP Semiconductors – Quad bus transceiver; 3-state; inverting | |||
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Philips Semiconductors
Quad bus transceiver; 3-state; inverting
Product speciï¬cation
74HC/HCT242
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see â74HC/HCT/HCU/HCMOS Logic Family Specificationsâ.
Output capability: bus driver
ICC category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
74HC
+25
â40 to +85
â40 to +125
UNIT
VCC
(V)
WAVEFORMS
min. typ. max. min. max. min. max.
tPHL/ tPLH
propagation delay
An to Bn;
Bn to An
25 90
115
9 18
23
7 15
20
tPZH/ tPZL 3-state output enable time
41 150
190
OEA to An or Bn;
15 30
38
OEB to An or Bn
12 26
33
tPHZ/ tPLZ 3-state output disable time
52 150
190
OEA to An or Bn;
19 30
38
OEB to An or Bn
15 26
33
tTHL/ tTLH output transition time
14 60
75
5 12
15
4 10
13
135 ns
27
23
225 ns
45
38
225 ns
45
38
90 ns
18
15
2.0 Fig.5
4.5
6.0
2.0 Figs 6 and 7
4.5
6.0
2.0 Figs 6 and 7
4.5
6.0
2.0 Fig.5
4.5
6.0
December 1990
5
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