Data Sheet

HEF4794B-Q100
8-stage shift-and-store register LED driver
Rev. 1 — 7 August 2012
Product data sheet
1. General description
The HEF4794B-Q100 is an 8-stage serial shift register. It has a storage latch associated
with each stage for strobing data from the serial input (D) to the parallel LED driver outputs
(QP0 to QP7). Data is shifted on the positive-going clock (CP) transitions. The data in
each shift register stage is transferred to the storage register when the strobe input (STR)
is HIGH. Data in the storage register appears at the outputs whenever the output enable
input (OE) signal is HIGH.
Two serial outputs (QS1 and QS2) are available for cascading a number of
HEF4794B-Q100 devices. Serial data is available at QS1 on positive-going clock edges to
allow high-speed operation in cascaded systems with a fast clock rise time. The same
serial data is available at QS2 on the next negative going clock edge. This is used for
cascading HEF4794B-Q100 devices when the clock has a slow rise time.
It operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS
(usually ground). Connect unused inputs to VDD, VSS, or another input.
This product has been qualified to the Automotive Electronics Council (AEC) standard
Q100 (Grade 1) and is suitable for use in automotive applications.
2. Features and benefits
 Automotive product qualification in accordance with AEC-Q100 (Grade 1)
 Specified from 40 C to +85 C and from 40 C to +125 C
 Fully static operation
 5 V, 10 V, and 15 V parametric ratings
 Standardized symmetrical output characteristics
 ESD protection:
 MIL-STD-833, method 3015 exceeds 2000 V
 HBM JESD22-A114F exceeds 2000 V
 MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0 )
 Complies with JEDEC standard JESD 13-B
3. Ordering information
Table 1.
Ordering information
All types operate from 40 C to +125 C.
Type number
HEF4794BT-Q100
Package
Name
Description
Version
SO16
plastic small outline package; 16 leads; body width 3.9 mm
SOT109-1
HEF4794B-Q100
NXP Semiconductors
8-stage shift-and-store register LED driver
4. Functional diagram
3
1
CP
STR
QS1
9
QS2
10
QP0
4
QP1
5
QP2
6
QP3
7
QP4
14
QP5
13
QP6
12
QP7
11
2
D
CP
9
STR
2
10
8-STAGE SHIFT
REGISTER
3
1
8-BIT STORAGE
REGISTER
15
OPEN-DRAIN
OUTPUTS
QS1
D
OE
4
5
QP0
6
7
QP2
QP1
14
13
QP4
QP3
12
11
QP6
QP5
QP7
OE
15
Fig 1.
QS2
001aaf111
Logic symbol
Fig 2.
STAGE 0
D
001aag798
STAGES 1 TO 6
Q
D
Functional diagram
D
STAGE 7
Q
CP
D
QS1
Q
CP
FF 0
D
FF 7
CP
CP
Q
QS2
LE
LATCH
D
Q
D
Q
LE
LE
LATCH 0
LATCH 7
STR
OE
QP2
QP0
QP1
Fig 3.
QP4
QP3
001aag799
QP6
QP5
QP7
Logic diagram
HEF4794B_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 7 August 2012
© NXP B.V. 2012. All rights reserved.
2 of 17
HEF4794B-Q100
NXP Semiconductors
8-stage shift-and-store register LED driver
5. Pinning information
5.1 Pinning
+()%4
675
9''
'
2(
&3
43
43
43
43
43
43
43
43
46
966
46
DDD
Fig 4.
Pin configuration
5.2 Pin description
Table 2.
Pin description
Symbol
Pin
Description
D
2
serial input
QP0 to QP7
4, 5, 6, 7, 14, 13, 12, 11
parallel output
QS1
9
serial output
QS2
10
serial output
CP
3
clock input
STR
1
strobe input
OE
15
output enable input
VDD
16
supply voltage
VSS
8
ground (0 V)
HEF4794B_Q100
Product data sheet
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Rev. 1 — 7 August 2012
© NXP B.V. 2012. All rights reserved.
3 of 17
HEF4794B-Q100
NXP Semiconductors
8-stage shift-and-store register LED driver
6. Functional description
Table 3.
Function table[1]
Input
Parallel output
Serial output
CP
OE
STR
D
QP0
QPn
QS1[2]
QS2[3]

L
X
X
Z
Z
Q6S
no change

L
X
X
Z
Z
n.c.
Q7S

H
L
X
no change
no change
Q6S
no change

H
H
L
Z
QPn 1
Q6S
no change

H
H
H
L
QPn 1
Q6S
no change

H
H
H
no change
no change
no change
Q7S
[1]
H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state;
 = LOW-to-HIGH clock transition;  = HIGH-to-LOW clock transition.
[2]
Q6S = the data in register stage 6 before the LOW to HIGH clock transition.
[3]
Q7S = the data in register stage 7 before the HIGH to LOW clock transition.
clock input
data input
strobe input
output enable
input
internal Q0S
(FF0)
Z-state
QP0 output
internal Q6S
(FF6)
Z-state
QP6 output
serial QS1
output
serial QS2
output
001aag801
Fig 5.
Timing diagram
HEF4794B_Q100
Product data sheet
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Rev. 1 — 7 August 2012
© NXP B.V. 2012. All rights reserved.
4 of 17
HEF4794B-Q100
NXP Semiconductors
8-stage shift-and-store register LED driver
7. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
Parameter
VDD
supply voltage
IIK
input clamping current
VI
input voltage
IOK
output clamping current
II
input leakage current
IO
output current
Conditions
VI < 0.5 V or VI > VDD + 0.5 V
QSn outputs;
VO < 0.5 V or VO > VDD + 0.5 V
QPn outputs; VO < 0.5 V
Min
Max
Unit
0.5
+18
V
-
10
mA
0.5
VDD + 0.5
V
-
10
mA
-
40
mA
-
10
mA
QSn outputs
-
10
mA
QPn outputs
-
40
mA
Tstg
storage temperature
65
+150
C
Tamb
ambient temperature
40
+125
C
-
500
mW
-
100
mW
Ptot
total power dissipation
Tamb = 40 C to +125 C
P
power dissipation
per output
[1]
[1]
For SO16 package: Ptot derates linearly with 8 mW/K above 70 C.
8. Recommended operating conditions
Table 5.
Recommended operating conditions
Symbol
Parameter
Min
Max
Unit
VDD
VI
supply voltage
3
15
V
input voltage
0
VDD
V
Tamb
ambient temperature
in free air
40
+125
C
t/V
input transition rise and fall rate
VDD = 5 V
-
3.75
s/V
HEF4794B_Q100
Product data sheet
Conditions
VDD = 10 V
-
0.5
s/V
VDD = 15 V
-
0.08
s/V
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Rev. 1 — 7 August 2012
© NXP B.V. 2012. All rights reserved.
5 of 17
HEF4794B-Q100
NXP Semiconductors
8-stage shift-and-store register LED driver
9. Static characteristics
Table 6.
Static characteristics
VSS = 0 V; VI = VSS or VDD; unless otherwise specified.
Symbol Parameter
VIH
VIL
VOH
VOL
HIGH-level
input voltage
LOW-level
input voltage
Conditions
IO < 1 A
HIGH-level
output voltage
QSn outputs;
IO < 1 A
LOW-level
output voltage
QSn outputs;
IO < 1 A
IOL
HIGH-level
output current
LOW-level
output current
Min
Max
Max
Min
Max
5V
3.5
-
3.5
-
3.5
-
3.5
-
V
7.0
-
7.0
-
7.0
-
7.0
-
V
15 V
11.0
-
11.0
-
11.0
-
11.0
-
V
5V
-
1.5
-
1.5
-
1.5
-
1.5
V
10 V
-
3.0
-
3.0
-
3.0
-
3.0
V
15 V
-
4.0
-
4.0
-
4.0
-
4.0
V
5V
4.95
-
4.95
-
4.95
-
4.95
-
V
10 V
9.95
-
9.95
-
9.95
-
9.95
-
V
15 V
14.95
-
14.95
-
14.95
-
14.95
-
V
5V
-
0.05
-
0.05
-
0.05
-
0.05
V
10 V
-
0.05
-
0.05
-
0.05
-
0.05
V
15 V
-
0.05
-
0.05
-
0.05
-
0.05
V
5V
-
0.75
-
0.75
-
1.5
-
1.5
V
10 V
-
0.75
-
0.75
-
1.5
-
1.5
V
15 V
-
0.75
-
0.75
-
1.5
-
1.5
V
mA
5V
-
1.7
-
1.4
-
1.1
-
1.1
-
0.64
-
0.5
-
0.36
-
0.36 mA
VO = 9.5 V
10 V
-
1.6
-
1.3
-
0.9
-
0.9
mA
VO = 13.5 V
15 V
-
4.2
-
3.4
-
2.4
-
2.4
mA
VO = 0.4 V
5V
0.64
-
0.5
-
0.36
-
0.36
-
mA
VO = 0.5 V
10 V
1.6
-
1.3
-
0.9
-
0.9
-
mA
VO = 1.5 V
15 V
4.2
-
3.4
-
2.4
-
2.4
-
mA
15 V
-
0.1
-
0.1
-
1.0
-
1.0
A
5V
-
2
-
2
-
15
-
15
A
10 V
-
2
-
2
-
15
-
15
A
15 V
-
2
-
2
-
15
-
15
A
5V
-
5
-
5
-
150
-
150
A
10 V
-
10
-
10
-
300
-
300
A
15 V
-
20
-
20
-
600
-
600
A
-
-
-
-
-
7.5
-
-
-
pF
QSn outputs
QPn output
is HIGH;
VO = 15 V
supply current
IO = 0 A
Product data sheet
Max
5V
OFF-state
output current
HEF4794B_Q100
Min
Min
VO = 4.6 V
IOZ
input
capacitance
Tamb = 85 C Tamb = 125 C Unit
VO = 2.5 V
input leakage
current
CI
Tamb = 25 C
QSn outputs
II
IDD
Tamb = 40 C
10 V
IO < 1 A
QPn outputs;
IO < 20 mA
IOH
VDD
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 7 August 2012
© NXP B.V. 2012. All rights reserved.
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HEF4794B-Q100
NXP Semiconductors
8-stage shift-and-store register LED driver
10. Dynamic characteristics
Table 7.
Dynamic characteristics
VSS = 0 V; Tamb = 25 C unless otherwise specified. For test circuit, see Figure 10.
Symbol
tPHL
Parameter
HIGH to LOW
propagation delay
Conditions
CP to QS1;
see Figure 6
CP to QS2;
see Figure 6
VDD
Extrapolation formula
Min
Typ
Max
Unit
132 ns + (0.55 ns/pF)CL
-
160
320
ns
10 V
53 ns + (0.23 ns/pF)CL
-
65
130
ns
15 V
37 ns + (0.16 ns/pF)CL
-
45
90
ns
5V
92 ns + (0.55 ns/pF)CL
-
120
240
ns
10 V
39 ns + (0.23 ns/pF)CL
-
50
100
ns
5V
[1]
32 ns + (0.16 ns/pF)CL
-
40
80
ns
102 ns + (0.55 ns/pF)CL
-
130
260
ns
10 V
44 ns + (0.23 ns/pF)CL
-
55
110
ns
15 V
32 ns + (0.16 ns/pF)CL
-
40
80
ns
15 V
tPLH
LOW to HIGH
propagation delay
CP to QS1;
see Figure 6
CP to QS2;
see Figure 6
tPZL
OFF-state to LOW
propagation delay
CP to QPn;
see Figure 6
STR to QPn;
see Figure 7
tPLZ
LOW to OFF-state
propagation delay
CP to QPn;
see Figure 6
STR to QPn;
see Figure 7
5V
[1]
5V
102 ns + (0.55 ns/pF)CL
-
130
260
ns
10 V
49 ns + (0.23 ns/pF)CL
-
60
120
ns
15 V
37 ns + (0.16 ns/pF)CL
-
45
90
ns
5V
-
240
480
ns
10 V
-
80
160
ns
15 V
-
55
110
ns
5V
-
140
280
ns
10 V
-
70
140
ns
15 V
-
55
110
ns
5V
-
170
340
ns
10 V
-
75
150
ns
15 V
-
60
120
ns
5V
-
100
200
ns
10 V
-
40
100
ns
-
35
70
ns
-
100
200
ns
10 V
-
55
110
ns
15 V
-
50
100
ns
-
80
160
ns
-
40
80
ns
15 V
ten
tdis
enable time
disable time
OE to QPn;
see Figure 8
OE to QPn;
see Figure 8
5V
5V
[2]
[2]
10 V
15 V
tt
transition time
QS1, QS2;
see Figure 6
5V
10 V
15 V
HEF4794B_Q100
Product data sheet
[1]
[3]
-
30
60
ns
35 ns + (1.00 ns/pF)CL
-
85
170
ns
19 ns + (0.42 ns/pF)CL
-
40
80
ns
16 ns + (0.28 ns/pF)CL
-
30
60
ns
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Rev. 1 — 7 August 2012
© NXP B.V. 2012. All rights reserved.
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HEF4794B-Q100
NXP Semiconductors
8-stage shift-and-store register LED driver
Table 7.
Dynamic characteristics …continued
VSS = 0 V; Tamb = 25 C unless otherwise specified. For test circuit, see Figure 10.
Symbol
Parameter
Conditions
VDD
tW
pulse width
CP; LOW and
HIGH;
see Figure 6
STR; HIGH;
see Figure 7
set-up time
tsu
hold time
th
fclk(max)
maximum clock
frequency
D to CP;
see Figure 9
D to CP;
see Figure 9
CP; see Figure 6
Extrapolation formula
Min
Typ
Max
Unit
5V
60
30
-
ns
10 V
30
15
-
ns
15 V
24
12
-
ns
5V
80
40
-
ns
10 V
60
30
-
ns
15 V
24
12
-
ns
5V
60
30
-
ns
10 V
20
10
-
ns
15 V
15
5
-
ns
5V
+5
15
-
ns
10 V
20
5
-
ns
15 V
20
5
-
ns
5V
5
10
-
MHz
10 V
11
22
-
MHz
15 V
14
28
-
MHz
[1]
The typical values of the propagation delay and transition times are calculated from the extrapolation formulas shown (CL in pF).
[2]
ten is the same as tPZL and tdis is the same as tPLZ
[3]
tt is the same as tTLH and tTHL
Table 8.
Dynamic power dissipation
PD can be calculated from the formulas shown. VSS = 0 V; tr = tf  20 ns; Tamb = 25 C.
Symbol Parameter
PD
VDD
Typical formula
Where
PD = 1200  fi + (fo  CL) 
VDD2
10 V
PD = 5550  fi + (fo  CL) 
VDD2
15 V
PD = 15000  fi + (fo  CL)  VDD W
dynamic power dissipation 5 V
W
fi = input frequency in MHz;
W
fo = output frequency in MHz;
2
CL = output load capacitance in pF;
(fo  CL) = sum of the outputs;
VDD = supply voltage in V.
HEF4794B_Q100
Product data sheet
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Rev. 1 — 7 August 2012
© NXP B.V. 2012. All rights reserved.
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HEF4794B-Q100
NXP Semiconductors
8-stage shift-and-store register LED driver
11. Waveforms
1/fclk(max)
VI
VM
CP input
VSS
tW
tW
tPLZ
tPZL
VDD
VY
QPn output
VX
VOL
tPLH
VOH
tPHL
90 %
VM
QS1 output
VOL
10 %
tTHL
tTLH
tPLH
VOH
tPHL
90 %
VM
QS2 output
10 %
VOL
tTLH
tTHL
001aag222
Parallel output measurement points are given in Table 9.
VOL and VOH are typical output voltage levels that occur with the output load.
Fig 6.
Propagation delay clock (CP) to output (QPn, QS1, QS2), clock pulse width and maximum clock
frequency
Table 9.
Measurement points
Supply
Input
Output
VDD
VM
VM
VX
VY
5 V to 15 V
0.5VDD
0.5VDD
0.1VO
0.9VO
VI
VM
CP input
VSS
VI
STR input
VM
VSS
VDD
tW
tPLZ
tPZL
VY
QPn output
VOL
VX
001aag802
Measurement points are given in Table 9.
VOL is the typical output voltage level that occurs with the output load.
Fig 7.
Strobe (STR) to output (QPn) propagation delays and the strobe pulse width
HEF4794B_Q100
Product data sheet
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Rev. 1 — 7 August 2012
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HEF4794B-Q100
NXP Semiconductors
8-stage shift-and-store register LED driver
VI
OE input
VM
VSS
tPLZ
tPZL
VDD
output
LOW to OFF-state
OFF-state to LOW
VOL
VY
VX
outputs
enabled
outputs
disabled
outputs
enabled
001aag803
Measurement points are given in Table 9.
VOL is the typical output voltage level that occurs with the output load.
Fig 8.
Enable and disable times for input OE
VI
CP input
VM
VSS
tsu
tsu
th
th
VI
VM
D input
VSS
VDD
QPn output
VOL
001aag805
Measurement points are given in Table 9.
The shaded areas indicate when the input is permitted to change for predictable output performance.
VOL is the typical output voltage level that occurs with the output load.
Fig 9.
Set-up and hold times for the data input (D)
HEF4794B_Q100
Product data sheet
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Rev. 1 — 7 August 2012
© NXP B.V. 2012. All rights reserved.
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HEF4794B-Q100
NXP Semiconductors
8-stage shift-and-store register LED driver
VI
90 %
input pulse
VSS
10 %
tf
tr
VEXT
VDD
G
VI
VO
RL
DUT
CL
RT
001aag804
Test data is given in Table 10.
Definitions for test circuit:
DUT - Device Under Test.
RL = Load resistance.
CL = load capacitance.
RT = Termination resistance should be equal to output impedance of Zo of the pulse generator.
VEXT = External voltage for measuring switching times.
Fig 10. Test circuit for measuring switching times
Table 10.
Test data
Supply
Input
VDD
VI
tr, tf
tPLZ, tPZL
tPLH, tPHL
CL
RL
5 V to 15 V
VDD
 20 ns
VDD
open
50 pF
1 k
HEF4794B_Q100
Product data sheet
VEXT
Load
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Rev. 1 — 7 August 2012
© NXP B.V. 2012. All rights reserved.
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HEF4794B-Q100
NXP Semiconductors
8-stage shift-and-store register LED driver
12. Application information
Application example: serial-to-parallel data converting LED drivers.
9''
9''
43
+()%4
'
2(
3:0
GLPPHULQSXW
675
&3
43
6
43
+()%4
'
2(
675
43
6
&3
&21752/
$1'
6<1&
&,5&8,75<
DDD
GDWD
FORFN
IURPUHPRWH
FRQWUROSDQHO
Fig 11. Serial-to-parallel converting LED drivers
HEF4794B_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 7 August 2012
© NXP B.V. 2012. All rights reserved.
12 of 17
HEF4794B-Q100
NXP Semiconductors
8-stage shift-and-store register LED driver
13. Package outline
SO16: plastic small outline package; 16 leads; body width 3.9 mm
SOT109-1
D
E
A
X
c
y
HE
v M A
Z
16
9
Q
A2
A
(A 3)
A1
pin 1 index
θ
Lp
1
L
8
e
0
detail X
w M
bp
2.5
5 mm
scale
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
UNIT
A
max.
A1
A2
A3
bp
c
D (1)
E (1)
e
HE
L
Lp
Q
v
w
y
Z (1)
mm
1.75
0.25
0.10
1.45
1.25
0.25
0.49
0.36
0.25
0.19
10.0
9.8
4.0
3.8
1.27
6.2
5.8
1.05
1.0
0.4
0.7
0.6
0.25
0.25
0.1
0.7
0.3
0.01
0.019 0.0100 0.39
0.014 0.0075 0.38
0.039
0.016
0.028
0.020
inches
0.010 0.057
0.069
0.004 0.049
0.16
0.15
0.05
0.244
0.041
0.228
0.01
0.01
0.028
0.004
0.012
θ
8o
o
0
Note
1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included.
REFERENCES
OUTLINE
VERSION
IEC
JEDEC
SOT109-1
076E07
MS-012
JEITA
EUROPEAN
PROJECTION
ISSUE DATE
99-12-27
03-02-19
Fig 12. Package outline SOT109-1 (SO16)
HEF4794B_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 7 August 2012
© NXP B.V. 2012. All rights reserved.
13 of 17
HEF4794B-Q100
NXP Semiconductors
8-stage shift-and-store register LED driver
14. Abbreviations
Table 11.
Abbreviations
Acronym
Description
HBM
Human Body Model
ESD
ElectroStatic Discharge
MM
Machine Model
MIL
Military
15. Revision history
Table 12.
Revision history
Document ID
Release date
Data sheet status
Change notice
Supersedes
HEF4794B_Q100 v.1
20120807
Product data sheet
-
-
HEF4794B_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 7 August 2012
© NXP B.V. 2012. All rights reserved.
14 of 17
HEF4794B-Q100
NXP Semiconductors
8-stage shift-and-store register LED driver
16. Legal information
16.1 Data sheet status
Document status[1][2]
Product status[3]
Definition
Objective [short] data sheet
Development
This document contains data from the objective specification for product development.
Preliminary [short] data sheet
Qualification
This document contains data from the preliminary specification.
Product [short] data sheet
Production
This document contains the product specification.
[1]
Please consult the most recently issued document before initiating or completing a design.
[2]
The term ‘short data sheet’ is explained in section “Definitions”.
[3]
The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.nxp.com.
16.2 Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. NXP Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is intended
for quick reference only and should not be relied upon to contain detailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local NXP Semiconductors sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
Product specification — The information and data provided in a Product
data sheet shall define the specification of the product as agreed between
NXP Semiconductors and its customer, unless NXP Semiconductors and
customer have explicitly agreed otherwise in writing. In no event however,
shall an agreement be valid in which the NXP Semiconductors product is
deemed to offer functions and qualities beyond those described in the
Product data sheet.
16.3 Disclaimers
Limited warranty and liability — Information in this document is believed to
be accurate and reliable. However, NXP Semiconductors does not give any
representations or warranties, expressed or implied, as to the accuracy or
completeness of such information and shall have no liability for the
consequences of use of such information. NXP Semiconductors takes no
responsibility for the content in this document if provided by an information
source outside of NXP Semiconductors.
In no event shall NXP Semiconductors be liable for any indirect, incidental,
punitive, special or consequential damages (including - without limitation - lost
profits, lost savings, business interruption, costs related to the removal or
replacement of any products or rework charges) whether or not such
damages are based on tort (including negligence), warranty, breach of
contract or any other legal theory.
Notwithstanding any damages that customer might incur for any reason
whatsoever, NXP Semiconductors’ aggregate and cumulative liability towards
customer for the products described herein shall be limited in accordance
with the Terms and conditions of commercial sale of NXP Semiconductors.
Right to make changes — NXP Semiconductors reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
HEF4794B_Q100
Product data sheet
Suitability for use in automotive applications — This NXP
Semiconductors product has been qualified for use in automotive
applications. Unless otherwise agreed in writing, the product is not designed,
authorized or warranted to be suitable for use in life support, life-critical or
safety-critical systems or equipment, nor in applications where failure or
malfunction of an NXP Semiconductors product can reasonably be expected
to result in personal injury, death or severe property or environmental
damage. NXP Semiconductors and its suppliers accept no liability for
inclusion and/or use of NXP Semiconductors products in such equipment or
applications and therefore such inclusion and/or use is at the customer's own
risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. NXP Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Customers are responsible for the design and operation of their applications
and products using NXP Semiconductors products, and NXP Semiconductors
accepts no liability for any assistance with applications or customer product
design. It is customer’s sole responsibility to determine whether the NXP
Semiconductors product is suitable and fit for the customer’s applications and
products planned, as well as for the planned application and use of
customer’s third party customer(s). Customers should provide appropriate
design and operating safeguards to minimize the risks associated with their
applications and products.
NXP Semiconductors does not accept any liability related to any default,
damage, costs or problem which is based on any weakness or default in the
customer’s applications or products, or the application or use by customer’s
third party customer(s). Customer is responsible for doing all necessary
testing for the customer’s applications and products using NXP
Semiconductors products in order to avoid a default of the applications and
the products or of the application or use by customer’s third party
customer(s). NXP does not accept any liability in this respect.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) will cause permanent
damage to the device. Limiting values are stress ratings only and (proper)
operation of the device at these or any other conditions above those given in
the Recommended operating conditions section (if present) or the
Characteristics sections of this document is not warranted. Constant or
repeated exposure to limiting values will permanently and irreversibly affect
the quality and reliability of the device.
Terms and conditions of commercial sale — NXP Semiconductors
products are sold subject to the general terms and conditions of commercial
sale, as published at http://www.nxp.com/profile/terms, unless otherwise
agreed in a valid written individual agreement. In case an individual
agreement is concluded only the terms and conditions of the respective
agreement shall apply. NXP Semiconductors hereby expressly objects to
applying the customer’s general terms and conditions with regard to the
purchase of NXP Semiconductors products by customer.
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 7 August 2012
© NXP B.V. 2012. All rights reserved.
15 of 17
HEF4794B-Q100
NXP Semiconductors
8-stage shift-and-store register LED driver
No offer to sell or license — Nothing in this document may be interpreted or
construed as an offer to sell products that is open for acceptance or the grant,
conveyance or implication of any license under any copyrights, patents or
other industrial or intellectual property rights.
Translations — A non-English (translated) version of a document is for
reference only. The English version shall prevail in case of any discrepancy
between the translated and English versions.
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from competent authorities.
16.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
17. Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
HEF4794B_Q100
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 7 August 2012
© NXP B.V. 2012. All rights reserved.
16 of 17
HEF4794B-Q100
NXP Semiconductors
8-stage shift-and-store register LED driver
18. Contents
1
2
3
4
5
5.1
5.2
6
7
8
9
10
11
12
13
14
15
16
16.1
16.2
16.3
16.4
17
18
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features and benefits . . . . . . . . . . . . . . . . . . . . 1
Ordering information . . . . . . . . . . . . . . . . . . . . . 1
Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2
Pinning information . . . . . . . . . . . . . . . . . . . . . . 3
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3
Functional description . . . . . . . . . . . . . . . . . . . 4
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 5
Recommended operating conditions. . . . . . . . 5
Static characteristics. . . . . . . . . . . . . . . . . . . . . 6
Dynamic characteristics . . . . . . . . . . . . . . . . . . 7
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Application information. . . . . . . . . . . . . . . . . . 12
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 13
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Revision history . . . . . . . . . . . . . . . . . . . . . . . . 14
Legal information. . . . . . . . . . . . . . . . . . . . . . . 15
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 15
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Contact information. . . . . . . . . . . . . . . . . . . . . 16
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP B.V. 2012.
All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
Date of release: 7 August 2012
Document identifier: HEF4794B_Q100