74ABT899 查看數據表（PDF） - Philips Electronics

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74ABT899

9-bit dual latch transceiver with 8-bit parity generator/checker (3-State)

Philips Electronics 

Philips Semiconductors

9-bit dual latch transceiver with 8-bit parity

generator/checker (3-State)

Product specification

74ABT899

1

ODD/EVEN

APAR

(BPAR)

0

An

(Bn)

EVEN PARITY

INPUT

SEL

BPAR

(APAR)

VM

VM

tPLH

tPHL

VM

VM

INPUT

OUTPUT

NOTE: Only even parity mode is shown with even parity. Odd parity mode would cause inverted output

and odd parity mode would be with ODD/EVEN = 1

SA00300

Waveform 8. Propagation Delay, SEL to BPAR or SEL to APAR

1

SEL

APAR, An]

(BPAR, Bn)

INPUT

LEA

(LEB)

VM

VM

INPUT

Bn, BPAR

(An, APAR)

tPLH

VM

tPHL

VM

OUTPUT

SA00301

Waveform 9. Propagation Delay, LEA to BPAR or LEB to APAR, LEA to Bn or LEB to An

ÉÉÉ APAR, BPAR,

ÉÉÉÉÉÉ An, Bn

VM

ts(H)

VMÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉVÉÉÉM ÉÉÉÉÉÉVÉÉÉM ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ

th(H)

ts(L)

th(L)

LEA, LEB

VM

VM

tw(H)

VM

The shaded areas indicate when the input is permitted to change for predictable output performance.

SA00302

Waveform 10. Data Setup and Hold Times, Pulse Width High

1998 Jan 16

11

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