HD74CBT3345 Datasheet, PDF (8/11 Pages) Renesas Technology Corp – 8-bit FET Bus Switch

HD74CBT3345
Switching Characteristics
(Ta = −40 to 85°C)
• 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 = 50 pF A or B
B or A
L
R
L
=
500
Ω
Enable time
t_ZH
1.0
9.1
ns
C_L = 50 pF
OE
A or B
t_ZL
R_L = 500 Ω
Disable time
t_HZ
1.0
8.7
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).
Test Circuit
S1
500 Ω
*1
CL = 50 pF
500 Ω
See under table
OPEN
GND
Load circuit for outputs
Symbol S1
t_PLH / t_PHL
t_ZH / t_HZ
t_ZL / t_LZ
OPEN
OPEN
7V
Note: 1. CL includes probe and jig capacitance.
Rev.0, Aug. 2001, page 6 of 6