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TCAL9538 Datasheet(PDF) 3 Page - Texas Instruments

Part # TCAL9538
Description  TCAL9538 8-Bit I2C-Bus, SMBus I/O Expander With Interrupt Output, Reset, and Agile I/O Configuration Registers
PDF  41 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TCAL9538 Datasheet(HTML) 3 Page - Texas Instruments

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4 Pin Configuration and Functions
RESET
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
A0
A1
P0
P1
P2
P3
GND
VCC
SDA
SCL
INT
P7
P6
P5
P4
Figure 4-1. PW (TSSOP) Package, 16-Pin
(Top View)
2
RESET
1
4
12
11
10
9
33
P0
P1
P2
SCL
INT
P7
P6
P3
GND
P4
P5
A1
A0
VCC
SDA
5
6
7
8
2
4
12
11
10
9
16
15
14
13
Figure 4-2. RSV (UQFN) Package, 16-Pin
(Top View)
Not to scale
1
2
3
4
A
B
C
D
P0
P2
P3
GND
P4
P5
P6
P7
P1
A1
SDA
INT
SCL
VCC
A0
RESET
Figure 4-3. DTU (X2QFN) Package, 16-Pin
(Top View)
Table 4-1. Pin Functions
PIN
TYPE(1)
DESCRIPTION
NAME
TSSOP
(PW)
QFN
(RSV)
X2QFN
(DTU)
A0
1
15
A2
I
Address input. Connect directly to VCC or ground
A1
2
16
B2
I
Address input. Connect directly to VCC or ground
GND
8
6
D2
–
Ground
INT
13
11
B4
O
Interrupt output. Connect to VCC through a pull-up resistor
P0
4
2
B1
I/O
P-port input/output (push-pull design structure). At power on, P0 is configured as an input
P1
5
3
C2
I/O
P-port input/output (push-pull design structure). At power on, P1 is configured as an input
P2
6
4
C1
I/O
P-port input/output (push-pull design structure). At power on, P2 is configured as an input
P3
7
5
D1
I/O
P-port input/output (push-pull design structure). At power on, P3 is configured as an input
P4
9
7
D3
I/O
P-port input/output (push-pull design structure). At power on, P4 is configured as an input
P5
10
8
D4
I/O
P-port input/output (push-pull design structure). At power on, P5 is configured as an input
P6
11
9
C4
I/O
P-port input/output (push-pull design structure). At power on, P6 is configured as an input
P7
12
10
C3
I/O
P-port input/output (push-pull design structure). At power on, P7 is configured as an input
RESET
3
1
A1
I
Active-low reset input. Connect to VCC through a pull-up resistor, if no active connection is
used
SCL
14
12
A4
I
Serial clock bus. Connect to VCC through a pull-up resistor
SDA
15
13
B3
I/O
Serial data bus. Connect to VCC through a pull-up resistor
VCC
16
14
A3
–
Supply voltage
(1)
I = Input, O = Output, I/O = Input or Output.
www.ti.com
TCAL9538
SCPS280A – NOVEMBER 2022 – REVISED NOVEMBER 2023
Copyright © 2023 Texas Instruments Incorporated
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Product Folder Links: TCAL9538



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