Bt457 - Monolithic CMOS 256-Color Palette RAMDAC

This page provides the datasheet information for the Bt457, a member of the Bt451 Monolithic CMOS 256-Color Palette RAMDAC family.

Product Overview

Part number	Bt457
Manufacturer	Brooktree
File Size	639.59 KB
Description	Monolithic CMOS 256-Color Palette RAMDAC
Datasheet	Bt457 Datasheet
Additional preview pages of the Bt457 datasheet.

The Bt4978 is available in both 84-pin Plastic Leaded Chip Carrier (PLCC) and Ceramic PGA packages, as illustrated in Figure 1 and 2.

Pin descriptions are provided in Table 1.

Pin labels for the PGA package are given in Table 2.

include programmable blink rates, bit plane masking and blinking, color overlay capability, and a dual-port color palette RAM. Functional Block Diagram CLOCK.
CLOCK VAA GND.

BT457 - (BT457 / BT458) Monolithic CMOS 256 Color Palette RAMDAC (Conexant Systems)
BT45228 - LCD (BATRON)
BT45258 - LCD (BATRON)
BT458 - (BT457 / BT458) Monolithic CMOS 256 Color Palette RAMDAC (Conexant Systems)
BT401 - DC/DC Converters (ETC)
BT402 - DC/DC Converters (ETC)
BT403 - DC/DC Converters (ETC)
BT404 - DC/DC Converters (ETC)
BT405 - DC/DC Converters (ETC)
BT40A01 - 10/100 Base-T Duad Port Transformer Module (TNK)

Other Datasheets by Brooktree

Bt451 - Monolithic CMOS 256-Color Palette RAMDAC
BT453 - Monolithic CMOS
Bt458 - Monolithic CMOS 256-Color Palette RAMDAC
BT459 - Monolithic CMOS 256 x 24 Color Palette RAMDAC
BT438 - Clock Generator Chip
BT440 - 275MHz PLL Clock Generator
BT467 - Monolithic CMOS 256-Color Palette RAMDAC
BT481 - 110 Mhz / 256 Word Color Palette / 24 Bit True Color Power Down RAMDAC

Published: Jan 8, 2025 |