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74HC243 Datasheet(PDF) 6 Page - NXP Semiconductors

Part No. 74HC243
Description  Quad bus transceiver; 3-state
Download  8 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74HC243 Datasheet(HTML) 6 Page - NXP Semiconductors

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December 1990
6
Philips Semiconductors
Product specification
Quad bus transceiver; 3-state
74HC/HCT243
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: bus driver
ICC category: MSI
Note to HCT types
The value of additional quiescent supply current (
∆ICC) for a unit load of 1 is given in the family specifications.
To determine
∆ICC per input, multiply this value by the unit load coefficient shown in the table below.
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr =tf = 6 ns; CL = 50 pF
INPUT
UNIT LOAD COEFFICIENT
An
Bn
OEA
OEB
1.10
1.10
1.00
1.00
SYMBOL PARAMETER
Tamb (°C)
UNIT
TEST CONDITIONS
74HCT
VCC
(V)
WAVEFORMS
+25
−40 to +85
−40 to +125
min.
typ.
max.
min.
max.
min.
max.
tPHL/ tPLH
propagation delay
An to Bn;
Bn to An
13
22
28
33
ns
4.5
Fig.5
tPZH/ tPZL
3-state output enable time
OEA to An or Bn;
OEB to An or Bn
18
34
43
51
ns
4.5
Figs 6 and 7
tPHZ/ tPLZ
3-state output disable time
OEA to An or Bn;
OEB to An or Bn
23
35
44
53
ns
4.5
Figs 6 and 7
tTHL/ tTLH
output transition time
5
12
15
18
ns
4.5
Fig.5


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