74HC7245 Datasheet, PDF (6/7 Pages) NXP Semiconductors – Octal bus Schmitt-trigger transceiver; 3-state

Philips Semiconductors
Octal bus Schmitt-trigger transceiver;
3-state
Product specification
74HC/HCT7245
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF
T_amb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
74HCT
+25
−40 to +85
−40 to +125
UNIT
V_CC
(V)
WAVEFORMS
min. typ. max. min. max. min. max.
t_PHL/ t_PLH
propagation delay
A_n to B_n;
B_n to A_n
17 30
37
45 ns 4.5 Fig.7
t_PZH/ t_PZL 3-state output enable time
19 32
40
48 ns 4.5 Fig.7
OE to A_n;
OE to B_n
t_PHZ/ t_PLZ 3-state output disable
time
19 32
40
48 ns 4.5 Fig.7
OE to A_n;
OE to B_n
t_THL/ t_TLH output transition time
5 12
15
18 ns 4.5 Fig.7
TRANSFER CHARACTERISTIC WAVEFORMS
handbook, halfpage _VO
MBA325
VH
VI
VT
VT
Fig.4 Transfer characteristic.
handbook, halfpage
VT
VI
VO
VH
VT
MBA324
Fig.5 Waveforms showing the definition of
V_T+, V_T − and V_H.
December 1990
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