HD74CBT3245A Datasheet, PDF (8/12 Pages) Renesas Technology Corp – Octal FET Bus Switch

HD74CBT3245A
Switching Characteristics
(Ta = −40 to 85°C)
• V_CC = 4.0 V
Item
Propagation delay
time ^*1
Enable time
Disable time
Symbol
t
PLH
t
PHL
t_ZH
t_ZL
t_HZ
t_LZ
Min



Max
0.35
7.2
7.4
Unit
ns
ns
ns
Test
conditions
C = 50 pF
L
R
L
=
500
Ω
C_L = 50 pF
R_L = 500 Ω
C_L = 50 pF
R_L = 500 Ω
FROM
(Input)
A or B
OE
OE
TO
(Output)
B or A
A or B
A or B
• V_CC = 5.0±0.5 V
Item
Symbol Min
Test
FROM
TO
Max
Unit conditions (Input) (Output)
Propagation delay
t_PLH
time ^*1
t_PHL

0.25
ns
C_L = 50 pF
A or B
B or A
R_L = 500 Ω
Enable time
t
1.9
6.5
ns
C = 50 pF OE
A or B
ZH
L
t_ZL
R_L = 500 Ω
Disable time
t_HZ
2.1
7.6
ns
C_L = 50 pF
OE
A or B
t
LZ
R
L
=
500
Ω
Note: 1. The propagation delay is the calculated RC time constant of the typical on-state resistance of the
switch and the specified load capacitance, when driven by an ideal voltage source (zero output
impedance).
Rev.0, Aug. 2001, page 6 of 6