Chip1982Texas Instruments

74HC374 Octal Edge-Triggered D-Type Flip-Flop with 3-State Outputs

Octal edge-triggered D-type flip-flop with 3-state true outputs. Data is transferred to outputs on the low-to-high transition of the clock pulse.

Aliase:SN74HC374N, 74HCT374, Octal D Flip-Flop

DIP-20 Top View

20 Pins

Pinout Table20

Pin	Signal / Name	Type	Alternative Functions
1	~OE	Digital	Output Enable (Active Low; High puts outputs in Hi-Z)
2	1Q	Digital	Flip-Flop 1 Output
3	1D	Digital	Flip-Flop 1 Data Input
4	2D	Digital	Flip-Flop 2 Data Input
5	2Q	Digital	Flip-Flop 2 Output
6	3Q	Digital	Flip-Flop 3 Output
7	3D	Digital	Flip-Flop 3 Data Input
8	4D	Digital	Flip-Flop 4 Data Input
9	4Q	Digital	Flip-Flop 4 Output
10	GND	Ground	System Ground (0V)
11	CLK	Digital	Clock Input (Active Rising Edge)
12	5Q	Digital	Flip-Flop 5 Output
13	5D	Digital	Flip-Flop 5 Data Input
14	6D	Digital	Flip-Flop 6 Data Input
15	6Q	Digital	Flip-Flop 6 Output
16	7Q	Digital	Flip-Flop 7 Output
17	7D	Digital	Flip-Flop 7 Data Input
18	8D	Digital	Flip-Flop 8 Data Input
19	8Q	Digital	Flip-Flop 8 Output
20	VCC	Power	Positive Supply Voltage (+2V to +6V)