hef4894b NXP Semiconductors, hef4894b Datasheet - Page 5

• Manufacturer Part Number: hef4894b
• Description: 12-stage Shift-and-store Register Led Driver
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Note
1. Definition of symbol equivalent to 3-state outputs.
AC CHARACTERISTICS
V
January 1995
Propagation delay
CP to O
OFF to LOW
Propagation delay
CP to O
LOW to OFF
Propagation delay
STR to O
OFF to LOW
Propagation delay
STR to O
LOW to OFF
Output transition
time; O
HIGH to LOW
Output transition
time; O
LOW to HIGH
output enable time
EO to O
OFF to LOW
output disable time
EO to O
LOW to OFF
minimum clock pulse width
LOW
minimum strobe pulse width
HIGH
SS
12-stage shift-and-store register LED driver
= 0 V; T
PARAMETER
s
s
n
n
, O
, O
n
n
n
n
PARAMETER
s
s
amb
’
’
= 25 C; C
L
= 50 pF; input transition times
V
(V)
10
15
10
15
10
15
10
15
10
15
10
15
5
5
5
5
5
5
DD
t
t
t
t
t
t
PZL
PLZ
PZL
PLZ
THL
TLH
SYMBOL
V
(V)
10
15
10
15
10
15
10
15
5
5
5
5
DD
t
t
t
t
PZL
PLZ
WCPL
WSTRH
SYMBOL
TYP.
240
170
140
100
80
55
75
60
70
55
40
35
85
40
30
85
40
30
5
20 ns.
MAX.
480
160
340
150
120
280
140
200
100
170
170
110
110
70
80
60
80
60
MIN.
60
30
24
80
60
24
UNIT
ns
ns
ns
ns
ns
ns
see note 1
see note 1
see note 1
see note 1
35 ns
19 ns
16 ns
35 ns
19 ns
16 ns
TYP.
100
55
50
80
40
30
30
15
12
40
30
12
TYPICAL EXTRAPOLATION
(0.42 ns/pF) C
(0.42 ns/pF) C
(1.0 ns/pF) C
(1.0 ns/pF) C
(0.28 ns/pF) C
(0.28 ns/pF) C
FORMULA
MAX.
200
110
100
160
80
60
Product specification
HEF4894B
L
L
L
L
L
L
ns
ns
ns
ns
UNIT