74HC540D-T Datasheet, PDF (6/7 Pages) NXP Semiconductors – Octal buffer/line driver; 3-state inverting

Philips Semiconductors
Octal buffer/line driver; 3-state; inverting
Product specification
74HC/HCT540
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: bus driver
I_CC category: MSI
Note to HCT types
The value of additional quiescent supply current (∆I_CC) for a unit load of 1 is given in the family specifications.
To determine ∆I_CC per input, multiply this value by the unit load coefficient shown in the table below.
INPUT
OE₁
OE₂
A_n
UNIT LOAD COEFFICIENT
1.50
1.00
1.40
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
t_PZH/ t_PZL
t_PHZ/ t_PLZ
t_THL/ t_TLH
propagation delay
A_n to Y_n
3-state
output enable time
OE to Y_n
3-state output
disable time
OE to Y_n
output transition time
13 24
30
22 35
44
23 35
44
5 12
15
36 ns
53 ns
4.5 Fig.6
4.5 Fig.7
53 ns 4.5 Fig.7
18 ns 4.5 Fig.6
December 1990
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