74HC2G02 Datasheet, PDF (10/16 Pages) NXP Semiconductors – Dual 2-input NOR gate

Philips Semiconductors
Dual 2-input NOR gate
AC WAVEFORMS
Product specification
74HC2G02; 74HCT2G02
handbook, halfpag^Ve_I
nA, nB input
GND
VOH
nY output
VOL
VM
t _PHL
VM
t _THL
VM
VM
10%
t _PLH
90%
tTLH _MNA718
For 74HC2G02: V_M = 50%; V_I = GND to V_CC.
For 74HCT2G02: V_M = 1.3 V; V_I = GND to 3.0 V.
Fig.5 The input (nA, nB) to output (nY) propagation delays and transition times.
handbook, full pagewidth
VCC
VI
PULSE
GENERATOR
VO
D.U.T.
RT
S1
RL =
1 kΩ
VCC
open
GND
CL =
50 pF
MNA742
TEST
t_PLH/t_PHL
t_PLZ/t_PZL
t_PHZ/t_PZH
S1
open
V_CC
GND
Definitions for test circuit:
C_L = Load capacitance including jig and probe capacitance.
R_T = Termination resistance should be equal to the output impedance Z_o of the pulse generator.
Fig.6 Load circuitry for switching times.
2003 May 14
10