74HC_HCT138_15 Datasheet, PDF (9/19 Pages) NXP Semiconductors – 3-to-8 line decoder/demultiplexer; inverting

NXP Semiconductors
11. Waveforms
74HC138; 74HCT138
3-to-8 line decoder/demultiplexer; inverting
9_&&
$Q(
LQSXW
 _*1'
9₂₊
<Q
RXWSXW
9_2/
9₀
W_3+/
9₀
W_7+/
W_3/+
W_7/+
PQD
Fig 6.
Measurement points are given in Table 8.
V_OL and V_OH are typical voltage output levels that occur with the output load.
Propagation delay input (An) and enable input (E3) to output (Yn) and transition time output (Yn)
9_&&
((
LQSXW
 _*1'
<Q
RXWSXW
9₂₊
9_2/
9₀
W_3+/
9₀
W_7+/
W_3/+
W_7/+
PQD
Fig 7.
Measurement points are given in Table 8.
V_OL and V_OH are typical voltage output levels that occur with the output load.
Propagation delay enable input (En) to output (Yn) and transition time output (Yn)
Table 8. Measurement points
Type
74HC138
74HCT138
Input
V_M
0.5V_CC
1.3 V
Output
V_M
0.5V_CC
1.3 V
74HC_HCT138
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 26 January 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
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