74HC194D 查看數據表（PDF） - Philips Electronics

零件编号

产品描述 (功能)

生产厂家

74HC194D

4-bit bidirectional universal shift register

Philips Electronics 

Philips Semiconductors

4-bit bidirectional universal shift register

AC WAVEFORMS

Product specification

74HC/HCT194

(1) HC : VM = 50%; VI = GND to VCC.

HCT: VM = 1.3 V; VI = GND to 3 V.

Fig.7

Waveforms showing the clock (CP) to

output (Qn) propagation delays, the clock

pulse width, the output transition times and

the maximum clock frequency.

(1) HC : VM = 50%; VI = GND to VCC.

HCT: VM = 1.3 V; VI = GND to 3 V.

Fig.8

Waveforms showing the master reset (MR)

pulse width, the master reset to output (Qn)

propagation delays and the master reset to

clock (CP) removal time.

The shaded areas indicate when the input is permitted to

change for predictable output performance.

(1) HC : VM = 50%; VI = GND to VCC.

HCT: VM = 1.3 V; VI = GND to 3 V.

Fig.9 Waveforms showing the set-up and hold

times from the data inputs (Dn, DSR and

DSL) to the clock (CP).

The shaded areas indicate when the input is permitted to

change for predictable output performance.

(1) HC : VM = 50%; VI = GND to VCC.

HCT: VM = 1.3 V; VI = GND to 3 V.

Fig.10 Waveforms showing the set-up and hold

times from the mode control inputs (Sn) to

the clock input (CP).

PACKAGE OUTLINES

See “74HC/HCT/HCU/HCMOS Logic Package Outlines”.

December 1990

10

Share Link: