CPAB	1  •	24	Vcc
SAB	2	23	CPBA
OEAB	3	22	SBA
A0	4	21	OE BA
A1	5	20	B0
A2	6	19	B1
A3	7	18	B2
A4	8	17	B3
A5	9	16	B4
A6	10	15	B5
A7	11	14	B6
GND	12	13	B7

Pin	Symbol	Description
1	CPAB	A to B clock input (low-to-high, edge-triggered)
2	SAB	select A to B source input
3	OEAB	output enable A to B
4	A0	A data input/output
5	A1	A data input/output
6	A2	A data input/output
7	A3	A data input/output
8	A4	A data input/output
9	A5	A data input/output
10	A6	A data input/output
11	A7	A data input/output
12	GND	ground
13	B7	B data input/output
14	B6	B data input/output
15	B5	B data input/output
16	B4	B data input/output
17	B3	B data input/output
18	B2	B data input/output
19	B1	B data input/output
20	B0	B data input/output
21	OE BA	output enable B to A (active low)
22	SBA	select B to A source input
23	CPBA	B to A clock input (low-to-high, edge-triggered)
24	Vcc	supply voltage

Specifications
(typical values under recommended operating conditions, unless specified)

Parameter	Value	Unit
Propagation delay, An /Bn to Bn /An	13 (74HC/HCT)	ns
Propagation delay, CPAB /CPBA to Bn /An	18 (74HC) 20 (74HCT)	ns
Propagation delay, SAB /SBA to Bn /An	20 (74HC) 23 (74HCT)	ns
Maximum clock frequency	92 (74HC/HCT)	MHz