Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt and Agile I/O in TSSOP24 package
PCAL9535APW,118
NXP Semiconductors
1:
9,11 zł
110 In Stock
20 000 On Order
Mouser Part No
771-PCAL9535APW,118
NXP Semiconductors
Interface - I/O Expanders 16-bit I2C-bus I/O Expander with Interrupt and Agile I/O in TSSOP24 package
110 In Stock
20 000 On Order
View Dates
Stock:
110 Can Dispatch Immediately
On Order:
5 000 Expected 3/22/2027
15 000 Expected 3/29/2027
Factory Lead Time:
30 Weeks
1
9,11 zł
10
6,76 zł
25
6,17 zł
100
5,54 zł
250
View
2 500
4,66 zł
250
5,21 zł
500
5,04 zł
1 000
4,96 zł
2 500
4,66 zł
Buy
Min.: 1
Mult.: 1
Reel :
2 500
Details
PCAL9535A
SMD/SMT
TSSOP-24
I2C, Serial
16 I/O
With Interrupt
1.65 V
5.5 V
100 kHz
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
2 kV
Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt, Reset and Agile I/O in TSSOP24 package
PCAL9539APW,118
NXP Semiconductors
1:
9,11 zł
110 In Stock
7 500 On Order
Mouser Part No
771-PCAL9539APW118
NXP Semiconductors
Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt, Reset and Agile I/O in TSSOP24 package
110 In Stock
7 500 On Order
View Dates
Stock:
110 Can Dispatch Immediately
On Order:
2 500 Expected 10/19/2026
5 000 Expected 3/22/2027
Factory Lead Time:
30 Weeks
1
9,11 zł
10
6,76 zł
25
6,17 zł
100
5,54 zł
250
View
2 500
4,79 zł
250
5,25 zł
500
5,08 zł
2 500
4,79 zł
Buy
Min.: 1
Mult.: 1
Reel :
2 500
Details
PCAL9539A
SMD/SMT
TSSOP-24
I2C, Serial, SMBus
16 I/O
With Interrupt
1.65 V
5.5 V
100 kHz
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
2 kV
Interface - I/O Expanders Mobile I/O Companion Key-Scan
LM8333FLQ8Y/NOPB
Texas Instruments
1:
18,31 zł
213 In Stock
Mouser Part No
926-LM8333FLQ8Y/NOPB
Texas Instruments
Interface - I/O Expanders Mobile I/O Companion Key-Scan
213 In Stock
1
18,31 zł
10
13,94 zł
25
13,31 zł
100
12,05 zł
250
10,79 zł
500
View
500
10,46 zł
1 000
10,25 zł
2 500
10,16 zł
Buy
Min.: 1
Mult.: 1
Reel :
250
Details
LM8333
SMD/SMT
WQFN-32
I2C, Serial
4 I/O
With Interrupt
2.25 V
2.9 V
400 kHz
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
8 kV
Interface - I/O Expanders PERI PRG-I/O 5V 8MHZ 44PLCC COMEL
+1 image
CS82C55AZ96
Renesas / Intersil
1:
83,66 zł
10 In Stock
1 000 Expected 2/2/2027
Mouser Part No
968-CS82C55AZ96
Renesas / Intersil
Interface - I/O Expanders PERI PRG-I/O 5V 8MHZ 44PLCC COMEL
10 In Stock
1 000 Expected 2/2/2027
Alternative Packaging
1
83,66 zł
10
64,55 zł
25
61,24 zł
100
56,62 zł
250
View
500
53,09 zł
250
54,64 zł
500
53,09 zł
1 000
Quote
Buy
Min.: 1
Mult.: 1
Reel :
500
Details
82C55A
SMD/SMT
PLCC-44
Parallel
24 I/O
With Interrupt
4.5 V
5.5 V
8 MHz
0 C
+ 70 C
Reel, Cut Tape, MouseReel
Without ESD Protection
Interface - I/O Expanders Column Keypad Scanner & GPIO Port Expand
Analog Devices ADP5587ACBZ-R7
ADP5587ACBZ-R7
Analog Devices
1:
13,73 zł
660 In Stock
Mouser Part No
584-ADP5587ACBZ-R7
Analog Devices
Interface - I/O Expanders Column Keypad Scanner & GPIO Port Expand
660 In Stock
1
13,73 zł
10
10,37 zł
25
9,53 zł
100
8,61 zł
1 500
7,35 zł
3 000
View
250
8,15 zł
500
8,11 zł
1 000
7,56 zł
3 000
7,27 zł
Buy
Min.: 1
Mult.: 1
Reel :
1 500
Details
ADP5587
SMD/SMT
WLCSP-25
I2C, Serial
18 I/O
With Interrupt
1.65 V
3.6 V
400 kHz
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
Interface - I/O Expanders 2-Wire-Interfaced 16-Bit I/O Port Expand
+2 images
MAX7311AWG+T
Analog Devices / Maxim Integrated
1:
42,21 zł
17 In Stock
Mouser Part No
700-MAX7311AWGT
Analog Devices / Maxim Integrated
Interface - I/O Expanders 2-Wire-Interfaced 16-Bit I/O Port Expand
17 In Stock
Alternative Packaging
1
42,21 zł
10
33,10 zł
25
30,83 zł
100
28,27 zł
1 000
25,54 zł
2 000
View
250
28,01 zł
500
27,13 zł
2 000
24,78 zł
5 000
Quote
Buy
Min.: 1
Mult.: 1
Reel :
1 000
Details
MAX7311
SMD/SMT
SOIC-24
I2C, Serial, SMBus
16 I/O
With Interrupt
2.5 V
5.5 V
400 kHz
- 40 C
+ 125 C
Reel, Cut Tape, MouseReel
Without ESD Protection
Interface - I/O Expanders 2-Wire-Interfaced 16-Bit I/O Port Expand
+1 image
MAX7312AWG+T
Analog Devices / Maxim Integrated
1:
30,58 zł
106 In Stock
Mouser Part No
700-MAX7312AWGT
Analog Devices / Maxim Integrated
Interface - I/O Expanders 2-Wire-Interfaced 16-Bit I/O Port Expand
106 In Stock
Alternative Packaging
1
30,58 zł
10
23,69 zł
25
22,01 zł
100
20,08 zł
1 000
18,65 zł
2 000
View
250
19,40 zł
500
19,11 zł
2 000
17,68 zł
Buy
Min.: 1
Mult.: 1
Reel :
1 000
Details
MAX7312
SMD/SMT
SOIC-Wide-24
I2C, Serial
16 I/O
With Interrupt
2 V
5.5 V
400 kHz
- 40 C
+ 125 C
Reel, Cut Tape, MouseReel
Without ESD Protection
Interface - I/O Expanders NCA6416PW/SOT355/TSSOP24
NCA6416PWJ
Nexperia
1:
6,26 zł
15 In Stock
2 500 Expected 9/18/2026
New Product
Mouser Part No
771-NCA6416PWJ
New Product
Nexperia
Interface - I/O Expanders NCA6416PW/SOT355/TSSOP24
15 In Stock
2 500 Expected 9/18/2026
1
6,26 zł
10
4,58 zł
25
4,15 zł
100
3,68 zł
2 500
3,13 zł
5 000
View
250
3,49 zł
500
3,36 zł
1 000
3,34 zł
5 000
3,07 zł
Buy
Min.: 1
Mult.: 1
Reel :
2 500
Details
Reel, Cut Tape, MouseReel
Interface - I/O Expanders 8bit I/O Expndr A 59 5-PCF8574DW A 595-P A 595-PCF8574DW
PCF8574DWR
Texas Instruments
1:
7,39 zł
15 617 On Order
Mouser Part No
595-PCF8574DWR
Texas Instruments
Interface - I/O Expanders 8bit I/O Expndr A 59 5-PCF8574DW A 595-P A 595-PCF8574DW
15 617 On Order
View Dates
Alternative Packaging
On Order:
7 617 Expected 9/7/2026
8 000 Expected 12/28/2026
Factory Lead Time:
16 Weeks
1
7,39 zł
10
5,50 zł
25
5,00 zł
100
4,45 zł
2 000
3,79 zł
4 000
View
250
4,19 zł
500
4,04 zł
1 000
3,90 zł
4 000
3,68 zł
Buy
Min.: 1
Mult.: 1
Reel :
2 000
Details
PCF8574
SMD/SMT
SOIC-16
I2C, Serial
8 I/O
With Interrupt
2.5 V
6 V
100 kHz
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
1 kV
Interface - I/O Expanders Lo-Vltg 8B I2C & SMB us I/O Expander
TCA6408ARSVR
Texas Instruments
1:
2,89 zł
98 358 On Order
Mouser Part No
595-TCA6408ARSVR
Texas Instruments
Interface - I/O Expanders Lo-Vltg 8B I2C & SMB us I/O Expander
98 358 On Order
View Dates
On Order:
20 358 Expected 1/5/2027
39 000 Expected 1/11/2027
39 000 Expected 1/18/2027
Factory Lead Time:
16 Weeks
1
2,89 zł
10
2,07 zł
25
1,86 zł
100
1,63 zł
250
View
3 000
1,37 zł
250
1,52 zł
500
1,46 zł
1 000
1,40 zł
3 000
1,37 zł
Buy
Min.: 1
Mult.: 1
Reel :
3 000
Details
TCA6408A
SMD/SMT
UQFN-16
I2C, Serial, SMBus
8 I/O
With Interrupt
1.65 V
5.5 V
400 kHz
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
2 kV
Interface - I/O Expanders Lo-Vltg 16B I2C and SMBus I/O Expander
TCA6416ARTWR
Texas Instruments
1:
7,39 zł
48 208 On Order
Mouser Part No
595-TCA6416ARTWR
Texas Instruments
Interface - I/O Expanders Lo-Vltg 16B I2C and SMBus I/O Expander
48 208 On Order
View Dates
On Order:
21 208 Expected 9/7/2026
27 000 Expected 12/17/2026
Factory Lead Time:
16 Weeks
1
7,39 zł
10
5,46 zł
25
5,00 zł
100
4,45 zł
3 000
3,79 zł
6 000
View
250
4,19 zł
500
4,01 zł
1 000
3,86 zł
6 000
3,65 zł
Buy
Min.: 1
Mult.: 1
Reel :
3 000
Details
TCA6416A
SMD/SMT
WQFN-24
I2C, Serial, SMBus
16 I/O
With Interrupt
1.65 V
5.5 V
400 kHz
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
2 kV
Interface - I/O Expanders 8-bit 1.65- to 5.5-V I2C/SMBus I/O expan A 595-TCA9534DWR
TCA9534DWT
Texas Instruments
1:
7,35 zł
1 In Stock
500 Expected 8/20/2026
Mouser Part No
595-TCA9534DWT
Texas Instruments
Interface - I/O Expanders 8-bit 1.65- to 5.5-V I2C/SMBus I/O expan A 595-TCA9534DWR
1 In Stock
500 Expected 8/20/2026
Alternative Packaging
1
7,35 zł
10
5,42 zł
25
4,96 zł
100
4,41 zł
250
4,12 zł
500
View
500
3,90 zł
1 000
3,75 zł
2 500
3,72 zł
5 000
3,65 zł
Buy
Min.: 1
Mult.: 1
Reel :
250
Details
TCA9534
SMD/SMT
SOIC-16
I2C, Serial, SMBus
8 I/O
With Interrupt
1.65 V
5.5 V
400 kHz
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
2 kV
Interface - I/O Expanders Remote 16bit I2C and SMBux
TCA9535RGER
Texas Instruments
1:
7,14 zł
60 000 On Order
Mouser Part No
595-TCA9535RGER
Texas Instruments
Interface - I/O Expanders Remote 16bit I2C and SMBux
60 000 On Order
View Dates
On Order:
30 000 Expected 12/24/2026
30 000 Expected 1/7/2027
Factory Lead Time:
16 Weeks
1
7,14 zł
10
5,29 zł
25
4,79 zł
100
4,28 zł
3 000
3,49 zł
6 000
View
250
3,97 zł
500
3,83 zł
6 000
3,43 zł
Buy
Min.: 1
Mult.: 1
Reel :
3 000
Details
TCA9535
SMD/SMT
VQFN-24
I2C, Serial, SMBus
16 I/O
With Interrupt
1.65 V
5 V
400 kHz
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
2 kV
Interface - I/O Expanders Automotive Low Volta ge 16bit
TCA9539QPWRQ1
Texas Instruments
1:
12,77 zł
25 567 On Order
Mouser Part No
595-TCA9539QPWRQ1
Texas Instruments
Interface - I/O Expanders Automotive Low Volta ge 16bit
25 567 On Order
View Dates
On Order:
15 567 Expected 11/9/2026
2 000 Expected 12/3/2026
8 000 Expected 12/17/2026
Factory Lead Time:
16 Weeks
1
12,77 zł
10
9,66 zł
25
8,86 zł
100
7,98 zł
2 000
6,85 zł
4 000
View
250
7,56 zł
500
7,48 zł
1 000
7,27 zł
4 000
6,76 zł
Buy
Min.: 1
Mult.: 1
Reel :
2 000
Details
TCA9539
SMD/SMT
TSSOP-24
I2C, Serial, SMBus
16 I/O
With Interrupt
1.65 V
3.6 V
400 kHz
- 40 C
+ 125 C
AEC-Q100
Reel, Cut Tape, MouseReel
2 kV
Interface - I/O Expanders SDIO Port Expander
TXS02612RTWR
Texas Instruments
1:
6,34 zł
33 108 On Order
Mouser Part No
595-TXS02612RTWR
Texas Instruments
Interface - I/O Expanders SDIO Port Expander
33 108 On Order
View Dates
On Order:
18 108 Expected 11/9/2026
15 000 Expected 1/21/2027
Factory Lead Time:
16 Weeks
1
6,34 zł
10
4,62 zł
25
4,19 zł
100
3,72 zł
250
View
3 000
2,88 zł
250
3,48 zł
500
3,39 zł
3 000
2,88 zł
Buy
Min.: 1
Mult.: 1
Reel :
3 000
Details
TXS02612
SMD/SMT
WQFN-24
Parallel
4 I/O
Without Interrupt
1.1 V
3.6 V
60 MHz
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
2 kV
Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with Interrupt and Different Address with PCA9554C in TSSOP16 package
PCA9554BPWJ
NXP Semiconductors
1:
6,09 zł
24 950 On Order
Mouser Part No
771-PCA9554BPWJ
NXP Semiconductors
Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with Interrupt and Different Address with PCA9554C in TSSOP16 package
24 950 On Order
View Dates
On Order:
12 450 Expected 10/8/2026
12 500 Expected 11/27/2026
Factory Lead Time:
16 Weeks
1
6,09 zł
10
4,49 zł
25
4,04 zł
100
3,56 zł
2 500
3,04 zł
5 000
View
250
3,34 zł
500
3,26 zł
1 000
3,23 zł
5 000
2,86 zł
Buy
Min.: 1
Mult.: 1
Reel :
2 500
Details
PCA9554B
SMD/SMT
TSSOP-16
I2C, Serial, SMBus
8 I/O
With Interrupt
1.65 V
5.5 V
100 kHz
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt in TSSOP24 package
PCA9555PW,118
NXP Semiconductors
1:
8,44 zł
54 875 Expected 10/19/2026
Mouser Part No
771-PCA9555PW-T
NXP Semiconductors
Interface - I/O Expanders 16-bit I2C-bus/SMBus I/O Expander with Interrupt in TSSOP24 package
54 875 Expected 10/19/2026
Alternative Packaging
1
8,44 zł
10
6,47 zł
25
6,05 zł
100
5,46 zł
250
View
2 500
4,58 zł
250
5,17 zł
500
5,04 zł
1 000
4,79 zł
2 500
4,58 zł
Buy
Min.: 1
Mult.: 1
Reel :
2 500
Details
PCA9555
SMD/SMT
TSSOP-24
I2C, Serial, SMBus
16 I/O
With Interrupt
2.3 V
5.5 V
400 kHz
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in HWQFN24 package
PCA9575HF,118
NXP Semiconductors
1:
11,05 zł
11 996 Expected 3/22/2027
Mouser Part No
771-PCA9575HF
NXP Semiconductors
Interface - I/O Expanders 16-bit I2C-bus/SMBus Level Translating I/O Expander with Interrupt and Reset in HWQFN24 package
11 996 Expected 3/22/2027
1
11,05 zł
10
8,27 zł
25
7,60 zł
100
6,85 zł
250
View
6 000
5,84 zł
250
6,47 zł
500
6,34 zł
6 000
5,84 zł
Buy
Min.: 1
Mult.: 1
Reel :
6 000
Details
PCA9575
SMD/SMT
HWQFN-24
I2C, Serial, SMBus
16 I/O
With Interrupt
1.1 V
3.6 V
400 kHz
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
6 kV
Interface - I/O Expanders 22-bit SPI Level Translating I/O Expander with Agile I/O and AEC-Q100 Compliant in HVQFN32 package
+1 image
PCAL9722HN/Q900MP
NXP Semiconductors
1:
8,06 zł
47 037 On Order
Mouser Part No
771-PCAL9722HNQ900MP
NXP Semiconductors
Interface - I/O Expanders 22-bit SPI Level Translating I/O Expander with Agile I/O and AEC-Q100 Compliant in HVQFN32 package
47 037 On Order
View Dates
On Order:
11 037 Expected 8/25/2026
12 000 Expected 8/27/2026
24 000 Expected 9/17/2026
Factory Lead Time:
30 Weeks
1
8,06 zł
10
5,96 zł
25
5,42 zł
100
4,83 zł
250
View
6 000
4,08 zł
250
4,58 zł
500
4,41 zł
6 000
4,08 zł
Buy
Min.: 1
Mult.: 1
Reel :
6 000
Details
PCAL9722
SMD/SMT
HVQFN-32
Serial, SPI
With Interrupt
1.1 V
5.5 V
5 MHz
- 40 C
+ 125 C
AEC-Q100
Reel, Cut Tape, MouseReel
2 kV
Interface - I/O Expanders Remote 8-Bit I/O Exp ander for I2C-Bus
PCF8574RGTR
Texas Instruments
1:
7,10 zł
8 203 Expected 9/18/2026
Mouser Part No
595-PCF8574RGTR
Texas Instruments
Interface - I/O Expanders Remote 8-Bit I/O Exp ander for I2C-Bus
8 203 Expected 9/18/2026
Alternative Packaging
1
7,10 zł
10
5,21 zł
25
4,75 zł
100
4,24 zł
250
4,01 zł
3 000
3,38 zł
Buy
Min.: 1
Mult.: 1
Reel :
3 000
Details
PCF8574
SMD/SMT
VQFN-16
I2C, Serial
8 I/O
With Interrupt
2.5 V
6 V
100 kHz
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
1 kV
Interface - I/O Expanders Remote 4-Bit I2C and SMBus I/O Expander ALT 595-PCA9536DGKR
+1 image
PCA9536DGKRG4
Texas Instruments
1:
5,71 zł
2 485 Expected 8/14/2026
Mouser Part No
595-PCA9536DGKRG4
Texas Instruments
Interface - I/O Expanders Remote 4-Bit I2C and SMBus I/O Expander ALT 595-PCA9536DGKR
2 485 Expected 8/14/2026
Alternative Packaging
1
5,71 zł
10
4,15 zł
25
3,79 zł
100
3,34 zł
2 500
2,55 zł
5 000
View
250
3,13 zł
500
3,01 zł
1 000
2,98 zł
5 000
2,53 zł
Buy
Min.: 1
Mult.: 1
Reel :
2 500
Details
PCA9536
SMD/SMT
VSSOP-8
I2C, Serial, SMBus
4 I/O
Without Interrupt
2.3 V
5.5 V
400 kHz
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
2 kV
Interface - I/O Expanders Remote 4-Bit I² C and SMBus I/O exp
TCA9537DGSR
Texas Instruments
1:
5,88 zł
4 900 Expected 10/5/2026
Mouser Part No
595-TCA9537DGSR
Texas Instruments
Interface - I/O Expanders Remote 4-Bit I² C and SMBus I/O exp
4 900 Expected 10/5/2026
1
5,88 zł
10
4,33 zł
25
3,94 zł
100
3,48 zł
2 500
2,92 zł
5 000
View
250
3,27 zł
500
3,15 zł
1 000
3,12 zł
5 000
2,86 zł
Buy
Min.: 1
Mult.: 1
Reel :
2 500
Details
TCA9537
SMD/SMT
VSSOP-10
I2C, Serial
4 I/O
With Interrupt
1.65 V
5.5 V
1 MHz
- 40 C
+ 125 C
Reel, Cut Tape, MouseReel
2 kV
Interface - I/O Expanders 1.65 to 5.5V 16-bit I2C
TCA9555RGER
Texas Instruments
1:
7,35 zł
11 528 Expected 8/26/2026
Mouser Part No
595-TCA9555RGER
Texas Instruments
Interface - I/O Expanders 1.65 to 5.5V 16-bit I2C
11 528 Expected 8/26/2026
1
7,35 zł
10
5,42 zł
25
4,96 zł
100
4,41 zł
3 000
3,61 zł
6 000
View
250
4,15 zł
500
4,01 zł
1 000
3,83 zł
6 000
3,54 zł
Buy
Min.: 1
Mult.: 1
Reel :
3 000
Details
TCA9555
SMD/SMT
VQFN-24
I2C, Serial, SMBus
16 I/O
With Interrupt
1.65 V
5.5 V
400 kHz
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
2 kV
Interface - I/O Expanders 8-bit translating I& sup2;C-bus/SMBus I/
TCAL6408DTUR
Texas Instruments
1:
5,54 zł
2 994 Expected 10/15/2026
Mouser Part No
595-TCAL6408DTUR
Texas Instruments
Interface - I/O Expanders 8-bit translating I& sup2;C-bus/SMBus I/
2 994 Expected 10/15/2026
1
5,54 zł
10
4,04 zł
25
3,68 zł
100
3,25 zł
3 000
2,67 zł
6 000
View
250
3,05 zł
500
2,93 zł
1 000
2,90 zł
6 000
2,62 zł
Buy
Min.: 1
Mult.: 1
Reel :
3 000
Details
TCAL6408
SMD/SMT
X2QFN-16
I2C, Serial
8 I/O
With Interrupt
1.08 V
3.6 V
1 MHz
- 40 C
+ 125 C
Reel, Cut Tape, MouseReel
4 kV
Interface - I/O Expanders 16-bit translating I C-bus/SMBus I/O exp
+1 image
TCAL6416RTWR
Texas Instruments
1:
7,60 zł
2 855 On Order
Mouser Part No
595-TCAL6416RTWR
Texas Instruments
Interface - I/O Expanders 16-bit translating I C-bus/SMBus I/O exp
2 855 On Order
1
7,60 zł
10
5,63 zł
25
5,17 zł
100
4,58 zł
3 000
3,83 zł
6 000
View
250
4,33 zł
500
4,19 zł
1 000
4,12 zł
6 000
3,72 zł
Buy
Min.: 1
Mult.: 1
Reel :
3 000
Details
TCAL6416
SMD/SMT
WQFN-24
I2C, Serial
16 I/O
With Interrupt
1.08 V
3.6 V
100 kHz
- 40 C
+ 125 C
Reel, Cut Tape, MouseReel
4 kV