Datasheet
SCLS423F − JUNE 1998 − REVISED SEPTEMBER 2003
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range,
V
CC
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
LOAD
T
A
= 25°C SN54AHC594 SN74AHC594
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
LOAD
CAPACITANCE
MIN TYP MAX MIN MAX MIN MAX
UNIT
f
max
C
L
= 15 pF 135* 170* 115* 115
MHz
f
max
C
L
= 50 pF 120 140 95 95
MHz
t
PLH
RCLK
Q
A
−Q
H
C
L
= 15 pF
3.3* 6.2* 1* 6.5* 1 6.5
ns
t
PHL
RCLK Q
A
−Q
H
C
L
= 15 pF
3.7* 6.5* 1* 6.9* 1 6.9
ns
t
PLH
SRCLK
Q
H
C
L
= 15 pF
3.7* 6.8* 1* 7.2* 1 7.2
ns
t
PHL
SRCLK Q
H′
C
L
= 15 pF
4.1* 7.2* 1* 7.6* 1 7.6
ns
t
PHL
RCLR Q
A
−Q
H
C
L
= 15 pF 4.5* 7.6* 1* 8.2* 1 8.2 ns
t
PHL
SRCLR Q
H′
C
L
= 15 pF 4.1* 7.1* 1* 7.6* 1 7.6 ns
t
PLH
RCLK
Q
A
−Q
H
C
L
= 50 pF
4.9 7.8 1 8.3 1 8.3
ns
t
PHL
RCLK Q
A
−Q
H
C
L
= 50 pF
5.8 8.9 1 9.7 1 9.7
ns
t
PLH
SRCLK
Q
H
C
L
= 50 pF
5.5 8.6 1 9.1 1 9.1
ns
t
PHL
SRCLK Q
H′
C
L
= 50 pF
6 9.2 1 10.1 1 10.1
ns
t
PHL
RCLR Q
A
−Q
H
C
L
= 50 pF 6.6 10 1 10.7 1 10.7 ns
t
PHL
SRCLR Q
H′
C
L
= 50 pF 6 9.2 1 10.1 1 10.1 ns
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
noise characteristics, V
CC
= 5 V, C
L
= 50 pF, T
A
= 25°C (see Note 4)
PARAMETER
SN74AHC594
UNIT
PARAMETER
MIN TYP MAX
UNIT
V
OL(P)
Quiet output, maximum dynamic V
OL
1 V
V
OL(V)
Quiet output, minimum dynamic V
OL
−0.6 V
V
OH(V)
Quiet output, minimum dynamic V
OH
3.8 V
V
IH(D)
High-level dynamic input voltage 3.5 V
V
IL(D)
Low-level dynamic input voltage 1.5 V
NOTE 4: Characteristics are for surface-mount packages only.
operating characteristics, V
CC
= 5 V, T
A
= 25°C
PARAMETER TEST CONDITIONS TYP UNIT
C
pd
Power dissipation capacitance No load, f = 1 MHz 112 pF
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