74HC194
4-bit bidirectional universal shift register
Rev. 3 — 29 November 2016
Product data sheet
1. General description
The 74HC194 is a 4-bit bidirectional universal shift register. The synchronous operation of
the device is determined by the mode select inputs (S0, S1). In parallel load mode (S0
and S1 HIGH) data appearing on the D0 to D3 inputs, when S0 and S1 are HIGH, is
transferred to the Q0 to Q3 outputs. When S0 is HIGH and S1 is LOW data is entered
serially via DSL and shifted from left to right; when S0 is LOW and S1 is HIGH data is
entered serially via DSR and shifted from right to left. DSR and DSL allow multistage shift
right or shift left data transfers without interfering with parallel load operation. If both S0
and S1 are LOW, existing data is retained in a hold mode. Mode select and data inputs
are edge-triggered, responding only to the LOW-to-HIGH transition of the clock (CP).
Therefore, the only timing restriction is that the mode control and selected data inputs
must be stable one set-up time prior to the positive transition of the clock pulse. When
LOW, the asynchronous master reset (MR) overrides all other input conditions and forces
the Q outputs LOW. Inputs include clamp diodes. This enables the use of current limiting
resistors to interface inputs to voltages in excess of VCC.
2. Features and benefits
Complies with JEDEC standard no. 7A
Input levels:
For 74HC194: CMOS level
Shift-left and shift right capability
Synchronous parallel and serial data transfer
Easily expanded for both serial and parallel operation
Asynchronous master reset
Hold (‘do nothing’) mode
ESD protection:
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
Specified from 40 C to +85 C and 40 C to +125 C
74HC194
Nexperia
4-bit bidirectional universal shift register
3. Ordering information
Table 1.
Ordering information
Type number
Package
Temperature range
Name
Description
Version
74HC194D
40 C to +125 C
SO16
plastic small outline package; 16 leads; body width 3.9 mm
SOT109-1
74HC194DB
40 C to +125 C
SSOP16 plastic shrink small outline package; 16 leads;
body width 5.3 mm
SOT338-1
4. Functional diagram
'65
'
'
'
'
'6/
6
&21752//2*,&
6
&3
))WR))
05
4
4
4
6
6
'65
'
4
'
4
'
4
'
4
'6/
&3 05
4
DDD
Fig 1.
Functional diagram
Fig 2.
DDD
Logic symbol
65*
&
0
5
'
'
'
'
'
'
DDD
Fig 3.
IEC logic symbol
74HC194
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 29 November 2016
©
Nexperia B.V. 2017. All rights reserved
2 of 17
74HC194
Nexperia
4-bit bidirectional universal shift register
'
'
'
'
'6/
6
6
'65
))
4
6
6
))
4
6
))
4
6
))
4
&3
&3
&3
&3
5
5
5
5
5'
5'
5'
5'
&3
05
4
4
4
4
DDD
Fig 4.
Logic diagram
5. Pinning information
5.1 Pinning
+&
05
9&&
'65
4
'
4
'
4
'
4
'
'6/
*1'
+&
05
9&&
'65
4
'
4
'
4
'
4
'
&3
'6/
6
*1'
&3
6
6
DDD
Fig 5.
Pin configuration SO16
74HC194
Product data sheet
6
DDD
Fig 6.
Pin configuration SSOP16
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 29 November 2016
©
Nexperia B.V. 2017. All rights reserved
3 of 17
74HC194
Nexperia
4-bit bidirectional universal shift register
5.2 Pin description
Table 2.
Pin description
Symbol
Pin
Description
MR
1
asynchronous master reset (active LOW)
DSR
2
serial data input (shift right)
D0, D1, D2, D3
3, 4, 5, 6
parallel data inputs
DSL
7
serial data input (shift left)
GND
8
ground (0 V)
S0, S1
9, 10
mode control inputs
CP
11
clock input (LOW-to-HIGH, edge triggered)
Q0, Q1, Q2, Q3
15, 14, 13, 12
parallel outputs
VCC
16
positive supply voltage
6. Functional description
Table 3.
Function table[1]
Operating mode
Inputs
CP
Outputs
MR
S1
S0
DSR
DSL
Dn
Q0
Q1
Q2
Q3
Reset (clear)
X
L
X
X
X
X
X
L
L
L
L
Hold (do nothing)
X
H
l
l
X
X
X
q0
q1
q2
q3
Shift left
H
h
l
X
l
X
q1
q2
q3
L
H
h
l
X
h
X
q1
q2
q3
H
H
l
h
l
X
X
L
q0
q1
q2
H
l
h
h
X
X
H
q0
q1
q2
H
h
h
X
X
dn
d0
d1
d2
d3
Shift right
Parallel load
[1]
H = HIGH voltage level;
h = HIGH voltage level one set-up time prior to the LOW-to-HIGH CP transition;
L = LOW voltage level;
I = LOW voltage level one set-up time prior to the LOW-to-HIGH CP transition;
q, d = lower case letters indicate the state of the referenced input (or output) one set-up time prior to the LOW-to-HIGH CP transition;
X = don’t care;
= LOW-to-HIGH clock transition.
74HC194
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 29 November 2016
©
Nexperia B.V. 2017. All rights reserved
4 of 17
74HC194
Nexperia
4-bit bidirectional universal shift register
&3
6
6
05
'65
'6/
'
+
'
/
'
+
'
/
4
4
4
4
FOHDUORDG
VKLIWULJKW
VKLIWOHIW
LQKLELW
FOHDU
DDD
Typical timing sequence:
Typical clear-load; shift-right; shift-left; inhibit and clear timing sequences.
Fig 7.
Typical timing sequence
7. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
VCC
supply voltage
IIK
input clamping current
VI < 0.5 V or VI > VCC + 0.5 V
Min
Max
Unit
0.5
+7.0
V
-
20
mA
IOK
output clamping current
VO < 0.5 V or VO > VCC + 0.5 V
-
20
mA
IO
output current
0.5 V < VO < VCC + 0.5 V
-
25
mA
ICC
supply current
-
+50
mA
IGND
ground current
50
-
mA
Tstg
storage temperature
Ptot
total power dissipation
[1]
65
+150
C
SO16 package
[1]
-
500
mW
SSOP16 package
[1]
-
500
mW
For SO16 packages: above 70 C the value of Ptot derates linearly at 8 mW/K.
For SSOP16 packages: above 60 C the value of Ptot derates linearly at 5.5 mW/K.
74HC194
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 29 November 2016
©
Nexperia B.V. 2017. All rights reserved
5 of 17
74HC194
Nexperia
4-bit bidirectional universal shift register
8. Recommended operating conditions
Table 5.
Recommended operating conditions
Voltages are referenced to GND (ground = 0 V)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VCC
supply voltage
2.0
5.0
6.0
V
VI
VO
input voltage
0
-
VCC
V
output voltage
0
-
VCC
V
Tamb
ambient temperature
40
+25
+125
C
t/V
input transition rise and fall rate
VCC = 2.0 V
-
-
625
ns/V
VCC = 4.5 V
-
1.67
139
ns/V
VCC = 6.0 V
-
-
83
ns/V
9. Static characteristics
Table 6.
Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
25 C
Conditions
Min
VIH
VIL
VOH
VOL
HIGH-level
input voltage
Typ
40 C to +85 C 40 C to +125 C Unit
Max
Min
Max
Min
Max
VCC = 2.0 V
1.5
1.2
-
1.5
-
1.5
-
V
VCC = 4.5 V
3.15
2.4
-
3.15
-
3.15
-
V
VCC = 6.0 V
4.2
3.2
-
4.2
-
4.2
-
V
VCC = 2.0 V
-
0.8
0.5
-
0.5
-
0.5
V
VCC = 4.5 V
-
2.1
1.35
-
1.35
-
1.35
V
VCC = 6.0 V
-
2.8
1.8
-
1.8
-
1.8
V
HIGH-level
VI = VIH or VIL
output voltage
IO = 20 A; VCC = 2.0 V
1.9
2.0
-
1.9
-
1.9
-
V
IO = 20 A; VCC = 4.5 V
4.4
4.5
-
4.4
-
4.4
-
V
IO = 20 A; VCC = 6.0 V
5.9
6.0
-
5.9
-
5.9
-
V
IO = 4.0 mA; VCC = 4.5 V
3.98
4.32
-
3.84
-
3.7
-
V
IO = 5.2 mA; VCC = 6.0 V
5.48
5.81
-
5.34
-
5.2
-
V
LOW-level
VI = VIH or VIL
output voltage
IO = 20 A; VCC = 2.0 V
-
0
0.1
-
0.1
-
0.1
V
IO = 20 A; VCC = 4.5 V
-
0
0.1
-
0.1
-
0.1
V
IO = 20 A; VCC = 6.0 V
-
0
0.1
-
0.1
-
0.1
V
IO = 4.0 mA; VCC = 4.5 V
-
0.15
0.26
-
0.33
-
0.4
V
IO = 5.2 mA; VCC = 6.0 V
-
0.16
0.26
-
0.33
-
0.4
V
VI = VCC or GND; VCC = 6.0 V
-
-
0.1
-
1.0
-
1.0
A
LOW-level
input voltage
II
input leakage
current
ICC
supply current VI = VCC or GND; IO = 0 A;
VCC = 6.0 V
-
-
8.0
-
80.0
-
160.0
A
CI
input
capacitance
-
3.5
-
-
-
-
-
pF
74HC194
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 29 November 2016
©
Nexperia B.V. 2017. All rights reserved
6 of 17
74HC194
Nexperia
4-bit bidirectional universal shift register
10. Dynamic characteristics
Table 7.
Dynamic characteristics
Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit see Figure 12.
Symbol Parameter
25 C
Conditions
Min
tpd
tPHL
tt
tW
tW
trec
propagation
delay
pulse width
pulse width
recovery
time
74HC194
Product data sheet
Typ Max
Min
Max
Min
Max
[1]
CP to Qn; see Figure 8
VCC = 2.0 V
-
47
145
-
180
-
220
ns
VCC = 4.5 V
-
17
29
-
36
-
44
ns
VCC = 5.0 V; CL = 15 pF
-
14
-
-
-
-
-
ns
VCC = 6.0 V
-
14
25
-
31
-
38
ns
-
39
140
-
175
-
210
ns
-
14
28
-
35
-
42
ns
High to LOW MR to Qn; see Figure 9
propagation
VCC = 2.0 V
delay
VCC = 4.5 V
transition
time
40 C to +85 C 40 C to +125 C Unit
VCC = 5.0 V; CL = 15 pF
-
11
-
-
-
-
-
ns
VCC = 6.0 V
-
11
24
-
30
-
36
ns
VCC = 2.0 V
-
19
75
-
95
-
110
ns
VCC = 4.5 V
-
7
15
-
19
-
22
ns
VCC = 6.0 V
-
6
13
-
16
-
19
ns
VCC = 2.0 V
80
17
-
100
-
120
-
ns
VCC = 4.5 V
16
6
-
20
-
24
-
ns
VCC = 6.0 V
14
5
-
17
-
20
-
ns
VCC = 2.0 V
80
17
-
100
-
120
-
ns
VCC = 4.5 V
16
6
-
20
-
24
-
ns
VCC = 6.0 V
14
5
-
17
-
20
-
ns
[2]
see Figure 8
CP HIGH or LOW; see Figure 8
MR pulse width LOW;
see Figure 9
MR to CP; see Figure 9
VCC = 2.0 V
60
17
-
75
-
90
-
ns
VCC = 4.5 V
12
6
-
15
-
18
-
ns
VCC = 6.0 V
10
5
-
13
-
15
-
ns
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 29 November 2016
©
Nexperia B.V. 2017. All rights reserved
7 of 17
74HC194
Nexperia
4-bit bidirectional universal shift register
Table 7.
Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit see Figure 12.
Symbol Parameter
25 C
Conditions
Min
tsu
set-up time
40 C to +85 C 40 C to +125 C Unit
Typ Max
Min
Max
Min
Max
Dn to CP; see Figure 10
VCC = 2.0 V
70
17
-
90
-
105
-
ns
VCC = 4.5 V
14
6
-
18
-
21
-
ns
VCC = 6.0 V
12
5
-
15
-
18
-
ns
VCC = 2.0 V
80
22
-
100
-
120
-
ns
VCC = 4.5 V
16
8
-
20
-
24
-
ns
VCC = 6.0 V
12
6
-
17
-
20
-
ns
VCC = 2.0 V
70
19
-
90
-
105
-
ns
VCC = 4.5 V
14
7
-
18
-
21
-
ns
VCC = 6.0 V
12
6
-
15
-
18
-
ns
VCC = 2.0 V
0
14
-
0
-
0
-
ns
VCC = 4.5 V
0
5
-
0
-
0
-
ns
VCC = 6.0 V
0
4
-
0
0
-
ns
VCC = 2.0 V
0
11
-
0
-
0
-
ns
VCC = 4.5 V
0
4
-
0
-
0
-
ns
VCC = 6.0 V
0
3
-
0
0
-
ns
VCC = 2.0 V
0
17
-
0
-
0
-
ns
VCC = 4.5 V
0
6
-
0
-
0
-
ns
VCC = 6.0 V
0
5
-
0
0
-
ns
VCC = 2.0 V
6
31
-
4.8
-
4
-
MHz
VCC = 4.5 V
30
93
-
24
-
20
-
MHz
-
102
-
-
-
-
-
MHz
35
111
-
28
-
24
-
MHz
S0, S1 to CP; see Figure 11
DSR, DSL to CP;
see Figure 10
th
hold time
Dn to CP; see Figure 10
S0, S1 to CP; see Figure 11
DSR, DSL to CP;
see Figure 10
fmax
maximum
frequency
CP; see Figure 8
VCC = 5.0 V; CL = 15 pF
VCC = 6.0 V
74HC194
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 29 November 2016
©
Nexperia B.V. 2017. All rights reserved
8 of 17
74HC194
Nexperia
4-bit bidirectional universal shift register
Table 7.
Dynamic characteristics …continued
Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit see Figure 12.
Symbol Parameter
25 C
Conditions
Min
CPD
[1]
power
dissipation
capacitance
VI = GND to VCC; fi = 1 MHz
[3]
-
40 C to +85 C 40 C to +125 C Unit
Typ Max
40
-
Min
Max
Min
Max
-
-
-
-
pF
tpd is the same as tPHL and tPLH.
[2]
tt is the same as tTHL and tTLH.
[3]
CPD is used to determine the dynamic power dissipation (PD in W):
PD = CPD VCC2 fi N + (CL VCC2 fo) where:
fi = input frequency in MHz; fo = output frequency in MHz;
CL = output load capacitance in pF;
VCC = supply voltage in V;
N = number of inputs switching;
(CL VCC2 fo) = sum of outputs.
11. Waveforms
9,
05LQSXW
IPD[
90
90
*1'
9,
&3
LQSXW
WUHF
W:
90
9,
*1'
&3LQSXW
W:
W3+/
92+
4Q
RXWSXW
W3/+
*1'
W3+/
92+
90
92/
4QRXWSXW
W7+/
90
W7/+
90
92/
DDD
Fig 8.
DDD
Measurement points are given in Table 8.
Measurement points are given in Table 8.
Logic levels VOL and VOH are typical output voltage
levels that occur with the output load.
Logic levels VOL and VOH are typical output voltage
levels that occur with the output load.
The clock (CP) to output (Qn) propagation
delays, the clock pulse width, the output
transition times and the maximum clock
frequency
74HC194
Product data sheet
Fig 9.
The master reset (MR) pulse width, master
reset to output (Qn) propagation delays, and
the master reset to clock (CP) recovery times
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 29 November 2016
©
Nexperia B.V. 2017. All rights reserved
9 of 17
74HC194
Nexperia
4-bit bidirectional universal shift register
9,
&3LQSXW
*1'
9,
90
66
LQSXW
WVX
9,
'Q'65'6/
LQSXW
*1'
WVX
WK
WK
WVX
90
&3LQSXW
DDD
WVX
WK
9,
*1'
WK
90
*1'
DDD
Measurement points are given in Table 8.
Measurement points are given in Table 8.
The shaded areas indicate when the input is permitted to
change for predictable output performance.
The shaded areas indicate when the input is permitted to
change for predictable output performance.
Fig 10. The set-up and hold times from the data inputs
(Dn, DSR and DSL) to the clock (CP)
Table 8.
90
Fig 11. The set-up and hold times from the mode
control inputs (Sn) to the clock input
Measurement points
Input
Output
VM
VI
VM
0.5 VCC
GND to VCC
0.5 VCC
74HC194
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 29 November 2016
©
Nexperia B.V. 2017. All rights reserved
10 of 17
74HC194
Nexperia
4-bit bidirectional universal shift register
9,
W:
QHJDWLYH
SXOVH
90
9
9,
WI
WU
WU
WI
SRVLWLYH
SXOVH
9
90
90
90
W:
9&&
9&&
*
9,
92
5/
57
6
RSHQ
'87
&/
DDG
Test data is given in Table 9.
Test circuit definitions:
RT = Termination resistance should be equal to output impedance Zo of the pulse generator
CL = Load capacitance including jig and probe capacitance
RL = Load resistance.
S1 = Test selection switch
Fig 12. Test circuit for measuring switching times
Table 9.
Test data
Input
Load
S1 position
VI
tr, tf
CL
RL
tPHL, tPLH
VCC
6 ns
15 pF, 50 pF
1 k
open
74HC194
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 29 November 2016
©
Nexperia B.V. 2017. All rights reserved
11 of 17
74HC194
Nexperia
4-bit bidirectional universal shift register
12. Package outline
62SODVWLFVPDOORXWOLQHSDFNDJHOHDGVERG\ZLGWKPP
627
'
(
$
;
F
\
+(
Y 0 $
=
4
$
$
$
$
SLQLQGH[
ș
/S
/
H
Z 0
ES
GHWDLO;
PP
VFDOH
',0(16,216LQFKGLPHQVLRQVDUHGHULYHGIURPWKHRULJLQDOPPGLPHQVLRQV
81,7
$
PD[
$
$
$
ES
F
'
(
H
+(
/
/S
4
Y
Z
\
=
PP
LQFKHV
ș
R
R
1RWH
3ODVWLFRUPHWDOSURWUXVLRQVRIPPLQFKPD[LPXPSHUVLGHDUHQRWLQFOXGHG
5()(5(1&(6
287/,1(
9(56,21
,(&
-('(&
627
(
06
-(,7$
(8523($1
352-(&7,21
,668('$7(
Fig 13. Package outline SOT109-1 (SO16)
74HC194
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 29 November 2016
©
Nexperia B.V. 2017. All rights reserved
12 of 17
74HC194
Nexperia
4-bit bidirectional universal shift register
6623SODVWLFVKULQNVPDOORXWOLQHSDFNDJHOHDGVERG\ZLGWKPP
'
627
(
$
;
F
\
+(
Y 0 $
=
4
$
$
$
$
SLQLQGH[
ș
/S
/
GHWDLO;
Z 0
ES
H
PP
VFDOH
',0(16,216PPDUHWKHRULJLQDOGLPHQVLRQV
81,7
$
PD[
$
$
$
ES
F
'
(
H
+(
/
/S
4
Y
Z
\
=
ș
PP
R
R
1RWH
3ODVWLFRUPHWDOSURWUXVLRQVRIPPPD[LPXPSHUVLGHDUHQRWLQFOXGHG
287/,1(
9(56,21
627
5()(5(1&(6
,(&
-('(&
-(,7$
(8523($1
352-(&7,21
,668('$7(
02
Fig 14. Package outline SOT338-1 (SSOP16)
74HC194
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 29 November 2016
©
Nexperia B.V. 2017. All rights reserved
13 of 17
74HC194
Nexperia
4-bit bidirectional universal shift register
13. Abbreviations
Table 10.
Abbreviations
Acronym
Description
CMOS
Complementary Metal-Oxide Semiconductor
DUT
Device Under Test
ESD
ElectroStatic Discharge
HBM
Human Body Model
MM
Machine Model
14. Revision history
Table 11.
Revision history
Document ID
Release date
Data sheet status
Change notice
Supersedes
74HC194 v.3
20161129
Product data sheet
-
74HC_HCT194 v.2
Modifications:
74HC_HCT194 v.2
74HC194
Product data sheet
•
The format of this data sheet has been redesigned to comply with the new identity
guidelines of NXP Semiconductors.
•
•
Legal texts have been adapted to the new company name where appropriate.
Type numbers 74HC194N, 74HCT194N and 74HCT194D removed.
19901201
Product specification
-
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 29 November 2016
-
©
Nexperia B.V. 2017. All rights reserved
14 of 17
74HC194
Nexperia
4-bit bidirectional universal shift register
15. Legal information
15.1 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.nexperia.com.
15.2 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. 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.
15.3 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.
74HC194
Product data sheet
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 a Nexperia product can reasonably be expected
to result in personal 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.
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.
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 29 November 2016
©
Nexperia B.V. 2017. All rights reserved
15 of 17
74HC194
Nexperia
4-bit bidirectional universal shift register
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.
15.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
16. Contact information
For more information, please visit: http://www.nexperia.com
For sales office addresses, please send an email to: salesaddresses@nexperia.com
74HC194
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 29 November 2016
©
Nexperia B.V. 2017. All rights reserved
16 of 17
Nexperia
74HC194
4-bit bidirectional universal shift register
17. Contents
1
2
3
4
5
5.1
5.2
6
7
8
9
10
11
12
13
14
15
15.1
15.2
15.3
15.4
16
17
©
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features and benefits . . . . . . . . . . . . . . . . . . . . 1
Ordering information . . . . . . . . . . . . . . . . . . . . . 2
Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2
Pinning information . . . . . . . . . . . . . . . . . . . . . . 3
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
Functional description . . . . . . . . . . . . . . . . . . . 4
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 5
Recommended operating conditions. . . . . . . . 6
Static characteristics. . . . . . . . . . . . . . . . . . . . . 6
Dynamic characteristics . . . . . . . . . . . . . . . . . . 7
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 12
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Revision history . . . . . . . . . . . . . . . . . . . . . . . . 14
Legal information. . . . . . . . . . . . . . . . . . . . . . . 15
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 15
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Contact information. . . . . . . . . . . . . . . . . . . . . 16
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Nexperia B.V. 2017. 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: 29 November 2016