3 Pin Configuration and Functions

Figure 3-1 CD54/74AC, ACT240 Types Terminal Assignment

Figure 3-3 CD54/74AC, ACT244 Types Terminal Assignment

Figure 3-2 CD54/74AC, ACT241 Types Terminal Assignment

Table 3-1 Pin Functions

PIN		TYPE⁽¹⁾	DESCRIPTION
NO.	NAME	TYPE⁽¹⁾	DESCRIPTION
1OE	1	I	Bank 1, output enable, active low
1A0	2	I	Bank 1, channel 1 input
2Y3	3	O	Bank 2, channel 4 output
1A1	4	I	Bank 1, channel 2 input
2Y2	5	O	Bank 2, channel 3 output
1A2	6	I	Bank 1, channel 3 input
2Y1	7	O	Bank 2, channel 2 output
1A3	8	I	Bank 1, channel 4 input
2Y0	9	O	Bank 2, channel 1 output
GND	10	G	Ground
2A0	11	I	Bank 2, channel 1 input
1Y3	12	O	Bank 1, channel 4 output
2A1	13	I	Bank 2, channel 2 input
1Y2	14	O	Bank 1, channel 3 output
2A2	15	I	Bank 2, channel 3 input
1Y1	16	O	Bank 1, channel 2 output
2A3	17	I	Bank 2, channel 4 input
1Y0	18	O	Bank 1, channel 1 output
2OE	19	I	Bank 2, output enable, active low
V_CC	20	P	Positive supply
Thermal pad⁽²⁾		—	The thermal pad can be connected to GND or left floating. Do not connect to any other signal or supply

(1) I = input, O = output, I/O = input or output, G = ground, P = power.

(2) RKS package only.