hef4794b NXP Semiconductors, hef4794b Datasheet - Page 4

• Manufacturer Part Number: hef4794b
• Description: 8-stage Shift-and-store Register Led Driver
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FUNCTIONAL DESCRIPTION
Table 1 Function table; note 1
Note
1. H = HIGH state;
DC CHARACTERISTICS
V
1999 Jun 30
V
I
SYMBOL
OZH
SS
CP
OL
8-stage shift-and-store register LED driver
L = LOW state;
X = don’t care;
Z = high-impedance OFF state;
nc = no change;
O
stage.
a) At the positive clock edge the information in the
= 0 V.
6
= positive-going transition;
= negative-going transition;
' = the information in the seventh shift register
7
stage and the O
th
EO
H
H
H
H
INPUTS
L
L
register stage is transferred to the 8
LOW level output
voltage
HIGH level output
leakage current;
3-state
STR
PARAMETER
X
X
H
H
H
L
H
H
D
X
X
X
S
L
output.
PARALLEL
OUTPUTS
O
nc
nc
H
Z
Z
L
0
V
V
V
V
V
V
V
V
I
I
I
I
I
DD
I
DD
O
O
O
O
O
O
O
O
= V
= V
= V
= 15 V; V
= 15 V; V
= 15 V; V
O
nc
nc
n
n
Z
Z
= 10 V
= 15 V
< 20 mA; V
< 20 mA;
< 20 mA;
n
CONDITIONS
SS
SS
SS
1
1
or V
or V
or V
OUTPUTS
O
O
O
O
O
nc
nc
SERIAL
DD
DD
DD
th
6
6
6
6
DD
DD
DD
S
'
'
'
'
register
;
;
;
= 5 V
= 10 V
= 15 V
DD
O
= 5 V
O
O
nc
nc
nc
nc
S
7
7
'
4
FAMILY DATA
See “Family Specifications” except for: rating for DC
current into any open-drain output is 40 mA.
I
See “Family Specifications” for ratings.
DD
MIN.
LIMITS CATEGORY MSI
40
0.75
0.75
0.75
2
2
2
MAX.
MIN.
T
amb
+25
( C)
0.75
0.75
0.75
2
2
2
MAX.
MIN.
Product specification
HEF4794B
+85
1.5
1.5
1.5
15
15
15
MAX.
V
V
V
UNIT
A
A
A