74HC541 Datasheet – Octal Bus Buffer – ST Microelectronics

Part Number : 74HC541, M74HC541, HC541

Description : 3-State Octal Bus Buffer

Package : DIP, SOP, TSSOP 20 Pin type

Manufactures : ST Microelectronics

Image

74HC541 Image

Description

The 74HC541 is an advanced high-speed CMOS OCTAL BUS BUFFER (3-STATE) fabricated with silicon gate C2MOS technology. The M74HC541 is a non inverting buffer. The 3-STATE control gate operates as a two input AND such that if either G1and G2are high, all eight output are in the high impedance state.

Pinout

74HC541 pinout

Features

1. High Speed : tPD = 9ns (TYP.) at VCC = 6V
2. LOW POWER DISSIPATION : ICC = 4µA(MAX.) at TA=25°C
3. HIGH NOISE IMMUNITY : VNIH = VNIL = 28 % VCC (MIN.)
4. SYMMETRICAL OUTPUT IMPEDANCE : |IOH| = IOL = 6mA (MIN)
5. BALANCED PROPAGATION DELAYS : tPLH ≅ tPHL
6. WIDE OPERATING VOLTAGE RANGE : VCC (OPR) = 2V to 6V
7. PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 541

Circuit Diagram

74HC541 Datasheet Circuit

74HC541 Datasheet

74HC541 pdf

 

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HD74HC564P Datasheet – Octal D-type Flip-Flop – Renesas

Part Number : HD74HC564P

Function : Octal D-type Flip-Flop (with 3-state outputs)

Package : DIP 20, SOP 20 Pin type

Manufacturers : Renesas Electronics

Pinouts :

HD74HC564P datasheet

 

Description :

These devices are positive edge triggered flip-flops. The difference between HD74HC564 and HD74HC574 is only that the former has inverting outputs and the latter has noninvertering outputs.

Data at the D inputs, meeting the set-up and hold time requirements, are transferred to the Q or outputs on positive going transitions of the clock (CK) input. When a high logic level is applied to the output control (OC) input, all outputs go to a high impedance state, regardless of what signals are present at the other inputs and the state of the storage elements.

 

Features

1. High Speed Operation: tpd (Clock to Output) = 13 ns typ (CL = 50 pF)
2. High Output Current: Fanout of 15 LSTTL Loads
3. Wide Operating Voltage: VCC = 2 to 6 V
4. Low Input Current: 1 μA max
5. Low Quiescent Supply Current: ICC (static) = 4 μA max (Ta = 25°C)

Other data sheets within the file : HD74HC564FPEL, HD74HC564RPEL, HD74HC574FPEL, HD74HC574P

 

HD74HC564P Datasheet PDF Download

HD74HC564P pdf