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74LVCH16541A

16-bit buffer/line driver (3-State)

Philips Electronics 

Philips Semiconductors

16-bit buffer/line driver; 5V tolerant I/O (3-State)

Product specification

74LVCH16541A

AC CHARACTERISTICS

GND = 0V; tR = tF ≤ 2.5ns; CL = 50pF; RL = 500Ω; Tamb = –40°C to +85°C.

LIMITS

SYMBOL

PARAMETER

WAVEFORM

VCC = 3.3V ±0.3V

MIN

TYP1

MAX

tPHL

tPLH

Propagation delay

1An to 1Yn;

2An to 2Yn

1, 3

1.5

2.7

4.5

tPZH

tPZL

3-State output enable time

1OEn to 1Yn;

2OEn to 2Yn

2, 3

1.5

3.5

5.9

tPHZ

tPLZ

3-State output disable time

1OEn to 1Yn;

2OEn to 2Yn

2, 3

1.5

3.9

5.5

NOTE:

1. All typical values are at VCC = 3.3V and Tamb = 25°C.

VCC = 2.7V

MIN

MAX

1.5

5.5

1.5

6.9

1.5

6.5

UNIT

ns

ns

ns

AC WAVEFORMS

VM = 1.5V at VCC w 2.7V; VM = 0.5 VCC at VCC t 2.7V.

VOL and VOH are the typical output voltage drop that occur with the

output load.

VX = VOL + 0.3V at VCC w 2.7V; VX = VOL + 0.1 VCC at VCC t 2.7V

VY = VOH –0.3V at VCC w 2.7V; VY = VOH – 0.1 VCC at VCC t 2.7V

VI

An

INPUT

VM

GND

VOH

tPHL

tPLH

Yn

OUTPUT

VM

VOL

SW00116

Waveform 1. Input (An) to output (Yn) propagation delay times

TEST CIRCUIT

PULSE

VI

GENERATOR

VCC

D.U.T.

RT

VO

CL 50pF

S1

500Ω

2 x VCC

Open

GND

500Ω

VCC

t 2.7V

2.7V – 3.6V

VI

VCC

2.7V

Test

tPLH/tPHL

tPLZ/tPZL

tPHZ/tPZH

S1

Open

2 x VCC

GND

SY00003

Waveform 3. Load circuitry for switching times

VI

OE INPUT

VM

GND

VCC

Y OUTPUT

LOW-to-OFF

OFF-to-LOW

VOL

VOH

Y OUTPUT

HIGH-to-OFF

OFF-to-HIGH

GND

tPLZ

tPZL

VM

VX

tPHZ

VY

tPZH

VM

outputs

enabled

outputs

disabled

outputs

enabled

SW00112

Waveform 2. 3-State enable and disable times

1998 May 19

6

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