5 Pin Configuration and Functions

Figure 5-1 TIOL112
DRC (VSON), 10-Pin
(Top View)

Figure 5-2 TIOL1123, TIOL1125
DRC (VSON), 10-Pin
(Top View)

Table 5-1 Pin Functions (VSON Package)

PIN NO	PIN NAME		TYPE	DESCRIPTION
PIN NO	TIOL112	TIOL1123 TIOL1125	TYPE	DESCRIPTION
1	VCC_IN	VCC_OUT	P	VCC_IN (TIOL112): External 3.3-V or 5-V logic supply input pin. VCC_OUT (TIOL1123, TIOL1125): 3.3-V or 5-V linear regulator output
2	NFAULT	NFAULT	O	Fault indicator output signal to the microcontroller. A low level indicates either an over- current, an undervoltage supply or an overtemperature condition.
3	RX	RX	O	Receive data output to the local microcontroller
4	TX	TX	I	Transmit data input from the local microcontroller. No effect if EN is low. Logic high sets low-side switch. Logic low sets high-side switch. Weak internal pull-up.
5	EN	EN	I	Driver enable input signal from the local microcontroller. Logic low sets the CQ output at Hi-Z. Weak internal pull-down.
6	ILIM_ADJ	ILIM_ADJ	I	Input for current limit adjustment. Connect resistor R_SET between ILIM_ADJ and L-.
7	L-	L-	GND	IO-Link ground potential
8	CQ	CQ	I/O	IO-Link data signal (bidirectional)
9	L+	L+	P	IO-Link supply voltage (24 V nominal)
10	WAKE	WAKE	O	Wake-up indicator to the local microcontroller. Open-drain output, connect this pin via pull-up resistor to VCC_IN/OUT.
	Thermal Pad	Thermal Pad	—	Connect to L- for optimal thermal and electrical performance

Figure 5-3 TIOL1123L
YAH (DSBGA), 12-Pin
(Top View)

Figure 5-4 TIOL112
YAH (DSBGA), 12-Pin
(Top View)

Table 5-2 Pin Functions (DSBGA)

PIN NO	PIN NAME		TYPE	DESCRIPTION
PIN NO	TIOL112	TIOL1123L	TYPE	DESCRIPTION
B3	VCC_IN	VCC_OUT	P	VCC_IN (TIOL112): External 3.3-V or 5-V logic supply input pin. VCC_OUT (TIOL1123): 3.3-V or 5-V linear regulator output
C3	NFAULT	NFAULT	O	Fault indicator output signal to the microcontroller. A low level indicates either an over- current, an undervoltage supply or an overtemperature condition.
D1	RX	RX	O	Receive data output to the local controller
D2	TX	TX	I	Transmit data input from the local controller. No effect if EN is low. Logic high sets low-side switch. Logic low sets high-side switch. Weak internal pull-up.
D3	EN	EN	I	Driver enable input signal from the local controller. Logic low sets the CQ output at Hi-Z. Weak internal pull-down.
B1	ILIM_ADJ	ILIM_ADJ	O	Input for current limit adjustment. Connect resistor R_SET between ILIM_ADJ and L-.
A1, B2	L-	L-	GND	IO-Link ground potential
A2	CQ	CQ	I/O	IO-Link data signal (bidirectional)
A3	L+	L+	P	IO-Link supply voltage (24 V nominal)
C1	NC	VSEL	I	TIOL112 (NC): Leave floating. Do not connect. TIOL1123 (VSEL): Connect to GND for 5V LDO output. Please leave this pin floating for 3.3V LDO output. VSEL has an internal pull-up of 1 MΩ
C2	WAKE	WAKE	O	Wake-up indicator to the local controller. Open-drain output, connect this pin via pull-up resistor to VCC_IN/OUT.