Datasheet

XC7SH14_1 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 01 — 1 September 2009 6 of 14
NXP Semiconductors
XC7SH14
Inverting Schmitt trigger
13. Waveforms
Measurement points are given in Table 10.
Fig 5. The input (A) to output (Y) propagation delays
mna033
A input
Y output
t
PHL
t
PLH
V
M
V
M
Table 10. Measurement points
Type number Input Output
V
I
V
M
V
M
XC7SH14 GND to V
CC
0.5 × V
CC
0.5 × V
CC
Test data is given in Table 11.
Definitions for test circuit:
C
L
= Load capacitance including jig and probe capacitance.
R
T
= Termination resistance should be equal to output impedance Z
o
of the pulse generator.
Fig 6. Load circuitry for switching times
mna101
V
CC
V
I
V
O
R
T
C
L
PULSE
GENERATOR
DUT
Table 11. Test data
Type Input Load Test
V
I
t
r
, t
f
C
L
XC7SH14 V
CC
≤ 3.0 ns 15 pF, 50 pF t
PLH
, t
PHL