74LVC38A Просмотр технического описания (PDF) - Philips Electronics

Номер в каталоге

Компоненты Описание

производитель

74LVC38A

Quad 2-input NAND gate (open drain)

Philips Electronics 

Philips Semiconductors

Quad 2-input NAND gate (open drain)

AC WAVEFORMS

Product specification

74LVC38A

handbook, full pagewidth

VI

nA, nB input

GND

VCC

nY output

VOL(2)

VM (1)

t PLZ

VX (3)

t PZL

VM (1)

MNA700

(1) VM = 1.5 V at VCC ≥ 2.7 V.

VM = 0.5VCC at VCC < 2.7 V.

(2) VOL and VOH are typical output voltage drop that occur with the output load.

(3) VX = VOL + 0.3 V at VCC ≥ 2.7 V.

VX = VOL + 0.15 V at VCC < 2.7 V.

Fig.6 The input nA, nB to output nY propagation delays.

handbook, full pagewidth

VCC

VI

PULSE

GENERATOR

VO

D.U.T.

RT

VEXT

RL

CL

RL

MNA616

VCC

1.2

2.7

3.3 to 3.6

VEXT

2 × VCC

6V

6V

VI

VCC

2.7 V

2.7 V

CL

30 pF

50 pF

50 pF

Note

1. The circuit performs better when RL = 1000 Ω.

RL

500 Ω(1)

500 Ω

500 Ω

Definitions for test circuits:

RL = Load resistor.

CL = Load capacitance including jig and probe capacitance.

RT = Termination resistance should be equal to the output impedance Zo of the pulse generator.

tr = tf ≤ 2.5 ns; when measuring fmax, there is no constraint on tr, tf with 50% duty factor.

Fig.7 Load circuitry for switching times.

2004 Mar 22

8

Share Link: