Philips Semiconductors

Product specification

74ALVT16646

2.5V/3.3V 16-bit bus transceiver (3-State)

1998 Feb 13

12

nSBA or

nSAB

nAx or nBx

SH00032

0V

Waveform 3. Propagation Delay, nSBA to nAx or nSAB to nBx

nAx or

nBx

nCPBA or

nCPAB

ts(H)

th(H)

ts(L)

th(L)

SH00033

NOTE: The shaded areas indicate when the input is permitted

to change for predictable output performance.

3.0V

or

0V

3.0V

or

0V

Waveform 4. Data Setup and Hold Times

nOE, nDIR

0V

nAx or nBx

nDIR

SH00034

0V

whichever

is less

Waveform 5. 3–State Output Enable Time to High Level and

Output Disable Time from High Level

0V

nOE, nDIR

nAx or nBx

nDIR

SH00035

0V

Waveform 6. 3–State Output Enable Time to Low Level and

Output Disable Time from Low Level

TEST CIRCUIT AND WAVEFORMS

PULSE

GENERATOR

VIN

VOUT

CL

VCC

RL

Test Circuit for 3-State Outputs

VM

VM

tW

NEGATIVE

PULSE

10%

10%

90%

90%

0V

VM

VM

tW

POSITIVE

PULSE

90%

90%

10%

10%

0V

tTHL (tF)

tTLH (tR)tTHL (tF)

tTLH (tR)

DEFINITIONS

See AC CHARACTERISTICS for value.

pulse generators.

INPUT PULSE REQUIREMENTS

FAMILY

74ALVT16

SWITCH POSITION

TEST

SWITCH

Open

GND

RL

Open

GND

SW00025

D.U.T.

Amplitude

Rep. Rate

whichever

is less

v10MHz

500ns

v2.5ns v2.5ns

VIN

VIN