Datasheet
Table Of Contents
- 1. General description
- 2. Features
- 3. Ordering information
- 4. Functional diagram
- 5. Pinning information
- 6. Functional description
- 7. Limiting values
- 8. Recommended operating conditions
- 9. Static characteristics
- 10. Dynamic characteristics
- 11. Waveforms
- 12. Package outline
- 13. Abbreviations
- 14. Revision history
- 15. Legal information
- 16. Contact information
- 17. Contents
74HC_HCT238_3 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 03 — 16 July 2007 9 of 18
NXP Semiconductors
74HC238; 74HCT238
3-to-8 line decoder/demultiplexer
Measurement points are given in Table 8.
V
OL
and V
OH
are typical voltage output levels that occur with the output load.
Fig 7. Input (E1, E2) to output (Yn) propagation delays and output transition times
001aag758
E1, E2 input
Yn output
t
THL
t
TLH
V
M
V
M
V
X
V
Y
t
PHL
t
PLH
Table 8. Measurement points
Type Input Output
V
M
V
M
V
X
V
Y
74HC238 0.5V
CC
0.5V
CC
0.1V
CC
0.9V
CC
74HCT238 1.3 V 1.3 V 0.1V
CC
0.9V
CC