74HC2G14 Datasheet, PDF (8/19 Pages) NXP Semiconductors – Inverting Schmitt-triggers

NXP Semiconductors
13. Waveforms
74HC2G14; 74HCT2G14
Dual inverting Schmitt trigger
V_I
nA input
GND
V_OH
nY output
V_OL
V_M
t _PHL
V_M
t _THL
V_M
V_M
10%
t _PLH
90%
t _TLH
mna722
Measurement points are given in Table 10.
V_OL and V_OH are typical voltage output drop that occur with the output load.
Fig 5. The data input (nA) to output (nY) propagation delays and output transition times
Table 10. Measurement points
Type
Input
V_M
74HC2G14
74HCT2G14
0.5V_CC
1.3 V
V_I
GND to V_CC
GND to 3.0 V
t_r = t_f
6.0 ns
6.0 ns
Output
V_M
0.5V_CC
1.3 V
V_I
PULSE
GENERATOR
V_CC
D.U.T
R_T
V_CC
V_O
R_L = 1 kΩ
C_L 50 pF
open
mgk563
Test data is given in Table 11.
Definitions test circuit:
R_L = Load resistance.
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
Table 11. Test data
Type
Input
74HC2G14
74HCT2G14
V_I
t_r, t_f
GND to V_CC
6 ns
GND to 3.0 V
6 ns
Test
t_PHL, t_PLH
open
open
74HC_HCT2G14_1
Product data sheet
Rev. 01 — 11 October 2006
© NXP B.V. 2006. All rights reserved.
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