HEF4794B
8-stage shift-and-store register LED driver
Rev. 9 — 7 November 2018
Product data sheet
1. General description
The HEF4794B 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 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 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). Unused inputs must be connected to VDD, VSS, or another input.
2. Features and benefits
•
•
•
•
•
Fully static operation
5 V, 10 V, and 15 V parametric ratings
Standardized symmetrical output characteristics
Specified from -40 °C to +85 °C and -40 °C to +125 °C
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
Package
Name
Description
Version
SO16
plastic small outline package; 16 leads; body width 3.9 mm
SOT109-1
HEF4794B
Nexperia
8-stage shift-and-store register LED driver
4. Functional diagram
2
3
1
CP
STR
D
OE
QS1
9
QS2
10
QP0
4
D
QP1
5
CP
QP2
6
QP3
7
QP4
14
QP5
13
QP6
12
QP7
11
STR
OE
2
9
1
8-BIT STORAGE
REGISTER
15
OPEN-DRAIN
OUTPUTS
4
QP0
15
Fig. 1.
001aaf111
Logic symbol
Fig. 2.
STAGE 0
D
D
D
5
QP1
6
QP2
7
QP3
14
QP4
13
QP5
12
QP6
QS2
QS1
11
QP7
001aag798
Functional diagram
STAGES 1 TO 6
Q
10
8-STAGE SHIFT
REGISTER
3
STAGE 7
Q
CP
D
Q
QS1
CP
FF 0
CP
D
FF 7
CP
Q
QS2
LE
LATCH
D
Q
D
Q
LE
LE
LATCH 0
LATCH 7
STR
OE
QP0
Fig. 3.
QP1
QP2
QP3
QP4
QP5
QP6
QP7
aaa-029301
Logic diagram
HEF4794B
Product data sheet
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Nexperia B.V. 2018. All rights reserved
2 / 14
HEF4794B
Nexperia
8-stage shift-and-store register LED driver
5. Pinning information
5.1. Pinning
HEF4794B
STR
1
16 VDD
D
2
15 OE
CP
3
14 QP4
QP0
4
13 QP5
QP1
5
12 QP6
QP2
6
11 QP7
QP3
7
10 QS2
VSS
8
9
QS1
001aag800
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 (open-drain)
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
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 9 — 7 November 2018
©
Nexperia B.V. 2018. All rights reserved
3 / 14
HEF4794B
Nexperia
8-stage shift-and-store register LED driver
6. Functional description
Table 3. Function table
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.
Input
Parallel output
Serial output
CP
OE
STR
D
QP0
QPn
QS1[1]
QS2[2]
↑
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]
[2]
Q6S = the data in register stage 6 before the LOW to HIGH clock transition.
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
Fig. 5.
001aag801
Timing diagram
HEF4794B
Product data sheet
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Rev. 9 — 7 November 2018
©
Nexperia B.V. 2018. All rights reserved
4 / 14
HEF4794B
Nexperia
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
Min
Max
Unit
-0.5
+18
V
-
±10
mA
-0.5
VDD + 0.5
QSn outputs;
VO < -0.5 V or VO > VDD + 0.5 V
-
±10
V
mA
QPn outputs; VO < -0.5 V
-
40
mA
-
±10
mA
QSn outputs
-
±10
mA
QPn outputs
-
40
mA
Tstg
storage temperature
-65
+150
°C
Tamb
ambient temperature
-40
+125
°C
Ptot
total power dissipation
Tamb = -40 °C to +125 °C
-
500
mW
P
power dissipation
per output
-
100
mW
SO16 package
[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
Conditions
Min
Max
Unit
VDD
supply voltage
3
15
V
VI
input voltage
0
VDD
V
Tamb
ambient temperature
in free air
-40
+125
°C
Δt/ΔV
input transition rise and fall rate
VDD = 5 V
-
3.75
μs/V
VDD = 10 V
-
0.5
μs/V
VDD = 15 V
-
0.08
μs/V
HEF4794B
Product data sheet
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Rev. 9 — 7 November 2018
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Nexperia B.V. 2018. All rights reserved
5 / 14
HEF4794B
Nexperia
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
Conditions
LOW-level
output voltage
IOL
HIGH-level
output current
LOW-level
output current
II
input leakage
current
IOZ
OFF-state
output current
IDD
CI
supply current
input
capacitance
HEF4794B
Product data sheet
Tamb = 25 °C
Tamb = 85 °C Tamb = 125 °C Unit
Max
Min
Max
Min
Max
Min
Max
3.5
-
3.5
-
3.5
-
3.5
-
V
10 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
VO = 2.5 V
5V
-
-1.7
-
-1.4
-
-1.1
-
-1.1
mA
VO = 4.6 V
5V
-
-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
|IO| < 1 μA
QSn outputs;
|IO| < 1 μA
QSn outputs;
|IO| < 1 μA
QPn outputs;
|IO| < 20 mA
IOH
Tamb = -40 °C
Min
LOW-level input |IO| < 1 μA
voltage
HIGH-level
output voltage
VDD
5V
QSn outputs
QSn outputs
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
μA
QPn output
is HIGH;
VO = 15 V
5V
-
2
-
2
-
15
-
15
μA
10 V
-
2
-
2
-
15
-
15
μA
15 V
-
2
-
2
-
15
-
15
μA
IO = 0 A
5V
-
5
-
5
-
150
-
150
μA
10 V
-
10
-
10
-
300
-
300
μA
15 V
-
20
-
20
-
600
-
600
μA
-
-
-
-
-
7.5
-
-
-
pF
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Rev. 9 — 7 November 2018
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6 / 14
HEF4794B
Nexperia
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 Fig. 10.
Symbol
Parameter
Conditions
VDD
tPHL
HIGH to LOW
propagation delay
CP to QS1;
see Fig. 6
5V
CP to QS2;
see Fig. 6
tPLH
LOW to HIGH
propagation delay
CP to QS2;
see Fig. 6
tPZL
OFF-state to LOW
propagation delay
CP to QPn;
see Fig. 6
STR to QPn;
see Fig. 7
tPLZ
LOW to OFF-state
propagation delay
CP to QPn;
see Fig. 6
STR to QPn;
see Fig. 7
ten
tdis
tt
tW
enable time
disable time
transition time
pulse width
QS1, QS2;
see Fig. 6
CP LOW and
HIGH; see Fig. 6
STR HIGH;
see Fig. 7
HEF4794B
Product data sheet
Max
Unit
-
160
320
ns
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
15 V
32 ns + (0.16 ns/pF)CL
-
40
80
ns
-
130
260
ns
[1] 102 ns + (0.55 ns/pF)CL
10 V
44 ns + (0.23 ns/pF)CL
-
55
110
ns
15 V
32 ns + (0.16 ns/pF)CL
-
40
80
ns
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
15 V
-
35
70
ns
-
100
200
ns
10 V
-
55
110
ns
15 V
-
50
100
ns
5V
OE to QPn;
see Fig. 8
Typ
53 ns + (0.23 ns/pF)CL
5V
OE to QPn;
see Fig. 8
[1] 132 ns + (0.55 ns/pF)CL
Min
10 V
5V
CP to QS1;
see Fig. 6
Extrapolation formula
[2]
-
80
160
ns
10 V
[2]
-
40
80
ns
15 V
-
30
60
ns
5 V [1][3] 35 ns + (1.00 ns/pF)CL
-
85
170
ns
10 V
19 ns + (0.42 ns/pF)CL
-
40
80
ns
15 V
16 ns + (0.28 ns/pF)CL
-
30
60
ns
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
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Rev. 9 — 7 November 2018
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Nexperia B.V. 2018. All rights reserved
7 / 14
HEF4794B
Nexperia
8-stage shift-and-store register LED driver
Symbol
Parameter
Conditions
tsu
set-up time
D to CP; see Fig. 9 5 V
Extrapolation formula
VDD
10 V
15 V
th
fclk(max)
[1]
[2]
[3]
maximum clock
frequency
CP; see Fig. 6
Typ
Max
Unit
60
30
-
ns
20
10
-
ns
15
5
-
ns
+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
D to CP; see Fig. 9 5 V
hold time
Min
The typical values of the propagation delay and transition times are calculated from the extrapolation formulas shown (CL in pF).
ten is the same as tPZL and tdis is the same as tPLZ
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
dynamic power dissipation 5 V
10 V
15 V
Typical formula
Where
PD = 1 200 x fi + Σ(fo x CL) x
2
VDD
2
VDD
μW
fi = input frequency in MHz;
fo = output frequency in MHz;
PD = 5 550 x fi + Σ(fo x CL) x
μW
CL = output load capacitance in pF;
2
PD = 15 000 x fi + Σ(fo x CL) x VDD μW Σ(fo × CL) = sum of the outputs;
VDD = supply voltage in V.
10.1. Waveforms and test circuit
1/fclk(max)
VI
VM
CP input
VSS
VDD
QPn output
VOL
VOH
tW
tW
tPLZ
tPZL
VY
VX
tPLH
tPHL
90 %
VM
QS1 output
VOL
VOH
10 %
tTHL
tTLH
tPLH
tPHL
90 %
VM
QS2 output
VOL
10 %
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
HEF4794B
Product data sheet
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Rev. 9 — 7 November 2018
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Nexperia B.V. 2018. All rights reserved
8 / 14
HEF4794B
Nexperia
8-stage shift-and-store register LED driver
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
tW
tPLZ
VDD
tPZL
VY
QPn output
VX
VOL
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
VI
OE input
VM
VSS
VDD
output
LOW to OFF-state
OFF-state to LOW
VOL
tPLZ
tPZL
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
VI
th
tsu
th
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
Product data sheet
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Nexperia B.V. 2018. All rights reserved
9 / 14
HEF4794B
Nexperia
8-stage shift-and-store register LED driver
VI
90 %
input pulse
VSS
10 %
tr
tf
VEXT
VDD
G
VI
VO
DUT
RL
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
VEXT
Load
VDD
VI
tr, tf
tPLZ, tPZL
tPLH, tPHL
CL
RL
5 V to 15 V
VDD
≤ 20 ns
VDD
open
50 pF
1 kΩ
11. Application information
VDD
VDD
QP0
HEF4794B
D
OE
PWM
dimmer input
STR
CP
QP7
S2
QP0
QP7
S2
HEF4794B
D
OE
STR
CP
CONTROL
AND
SYNC
CIRCUITRY
001aag806
data
clock
from remote
control panel
Fig. 11. Application example: serial-to-parallel data converting LED drivers
HEF4794B
Product data sheet
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Rev. 9 — 7 November 2018
©
Nexperia B.V. 2018. All rights reserved
10 / 14
HEF4794B
Nexperia
8-stage shift-and-store register LED driver
12. 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
w M
bp
0
2.5
detail X
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
0.16
0.15
0.039
0.016
0.028
0.020
inches
0.010 0.057
0.069
0.004 0.049
0.05
0.244
0.041
0.228
0.01
0.01
0.028
0.004
0.012
θ
o
8
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
Product data sheet
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Rev. 9 — 7 November 2018
©
Nexperia B.V. 2018. All rights reserved
11 / 14
HEF4794B
Nexperia
8-stage shift-and-store register LED driver
13. Revision history
Table 11. Revision history
Document ID
Release date
Data sheet status
Change notice
Supersedes
HEF4794B v.9
20181107
Product data sheet
-
HEF4794B v.8
Modifications:
•
•
•
The format of this data sheet has been redesigned to comply with the identity guidelines of
Nexperia.
Legal texts have been adapted to the new company name where appropriate.
Fig. 3 and Fig. 5 corrected.
HEF4794B v.8
20160404
Modifications:
•
HEF4794B v.7
20111116
Modifications:
•
•
HEF4794B v.6
20100901
Product data sheet
-
HEF4794B v.5
HEF4794B v.5
20100402
Product data sheet
-
HEF4794B v.4
HEF4794B v.4
20091222
Product data sheet
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HEF4794B v.3
HEF4794B v.3
20080812
Product data sheet
-
HEF4794B v.2
HEF4794B v.2
19990630
Product specification
-
HEF4794B v.1
HEF4794B v.1
19940701
Product specification
-
-
HEF4794B
Product data sheet
Product data sheet
-
HEF4794B v.7
Type number HEF4794BP (SOT38-4) removed.
Product data sheet
-
HEF4794B v.6
Section Applications removed
•Table 6:
• IOH minimum values changed to maximum
• added the unit pF for CI
All information provided in this document is subject to legal disclaimers.
Rev. 9 — 7 November 2018
©
Nexperia B.V. 2018. All rights reserved
12 / 14
HEF4794B
Nexperia
8-stage shift-and-store register LED driver
14. Legal information
injury, death or severe property or environmental damage. Nexperia and its
suppliers accept no liability for inclusion and/or use of Nexperia products in
such equipment or applications and therefore such inclusion and/or use is at
the customer’s own risk.
Data sheet status
Quick reference data — The Quick reference data is an extract of the
product data given in the Limiting values and Characteristics sections of this
document, and as such is not complete, exhaustive or legally binding.
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]
[2]
[3]
Please consult the most recently issued document before initiating or
completing a design.
The term 'short data sheet' is explained in section "Definitions".
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 https://www.nexperia.com.
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. Nexperia 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 Nexperia 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
Nexperia and its customer, unless Nexperia and customer have explicitly
agreed otherwise in writing. In no event however, shall an agreement be
valid in which the Nexperia product is deemed to offer functions and qualities
beyond those described in the Product data sheet.
Disclaimers
Limited warranty and liability — Information in this document is believed
to be accurate and reliable. However, Nexperia 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. Nexperia takes no responsibility
for the content in this document if provided by an information source outside
of Nexperia.
In no event shall Nexperia 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, Nexperia’s 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 Nexperia.
Right to make changes — Nexperia 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.
Suitability for use — Nexperia products are 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 Nexperia product can reasonably be expected to result in personal
HEF4794B
Product data sheet
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. Nexperia 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 Nexperia products, and Nexperia accepts no liability for
any assistance with applications or customer product design. It is customer’s
sole responsibility to determine whether the Nexperia 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.
Nexperia 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 Nexperia 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). Nexperia 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 — Nexperia products are
sold subject to the general terms and conditions of commercial sale, as
published at http://www.nexperia.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. Nexperia hereby expressly objects to applying the customer’s general
terms and conditions with regard to the purchase of Nexperia products by
customer.
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.
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.
Non-automotive qualified products — Unless this data sheet expressly
states that this specific Nexperia product is automotive qualified, the
product is not suitable for automotive use. It is neither qualified nor tested in
accordance with automotive testing or application requirements. Nexperia
accepts no liability for inclusion and/or use of non-automotive qualified
products in automotive equipment or applications.
In the event that customer uses the product for design-in and use in
automotive applications to automotive specifications and standards,
customer (a) shall use the product without Nexperia’s warranty of the
product for such automotive applications, use and specifications, and (b)
whenever customer uses the product for automotive applications beyond
Nexperia’s specifications such use shall be solely at customer’s own risk,
and (c) customer fully indemnifies Nexperia for any liability, damages or failed
product claims resulting from customer design and use of the product for
automotive applications beyond Nexperia’s standard warranty and Nexperia’s
product specifications.
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.
Trademarks
Notice: All referenced brands, product names, service names and
trademarks are the property of their respective owners.
All information provided in this document is subject to legal disclaimers.
Rev. 9 — 7 November 2018
©
Nexperia B.V. 2018. All rights reserved
13 / 14
HEF4794B
Nexperia
8-stage shift-and-store register LED driver
Contents
1. General description...................................................... 1
2. Features and benefits.................................................. 1
3. Ordering information....................................................1
4. Functional diagram.......................................................2
5. Pinning information......................................................3
5.1. Pinning.........................................................................3
5.2. Pin description............................................................. 3
6. Functional description................................................. 4
7. Limiting values............................................................. 5
8. Recommended operating conditions..........................5
9. Static characteristics....................................................6
10. Dynamic characteristics............................................ 7
10.1. Waveforms and test circuit........................................ 8
11. Application information............................................10
12. Package outline........................................................ 11
13. Revision history........................................................12
14. Legal information......................................................13
©
Nexperia B.V. 2018. All rights reserved
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
Date of release: 7 November 2018
HEF4794B
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 9 — 7 November 2018
©
Nexperia B.V. 2018. All rights reserved
14 / 14