4 Pin Configuration and Functions

Figure 4-1 SN54AHCT126 J or W Packages,
CDIP or CFP
SN74AHCT126 D, DB, DGV, N, NS, or PW Packages, 14-Pin SOIC, SSOP, TVSOP, PDIP, SOP or TSSOP (Top View)

Figure 4-3 SNx4AHCT126 BQA Package, 14-Pin WQFN (Top View)

Figure 4-2 SN54AHCT126 FK Package, 20-Pin LCCC (Top View)

Table 4-1 Pin Functions

PIN				TYPE⁽¹⁾	DESCRIPTION
NAME	SN74AHCT126	SN54AHCT126
NAME	D, DB, DGV, N, NS, PW, BQA	J, W	FK
1A	2	2	3	I	1A Input
1OE	1	1	2	I	Output Enable 1
1Y	3	3	4	O	1Y Output
2A	5	5	8	I	2A Input
2OE	4	4	6	I	Output Enable 2
2Y	6	6	9	O	2Y Output
3A	9	9	13	I	3A Input
3OE	10	10	14	I	Output Enable 3
3Y	8	8	12	O	3Y Output
4A	12	12	18	I	4A Input
4OE	13	13	19	I	Output Enable 4
4Y	11	11	16	O	4Y Output
GND	7	7	10	—	Ground Pin
NC		—	1	—	No Connection
			5
			7
			11
			15
			17
V_CC	14	14	20	—	Power Pin
Thermal Pad⁽²⁾				—	Thermal Pad

(1) I = input, O = output

(2) For BQA package only