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UPB429-2 fiches techniques PDF

NEC - 2K x 8-BIT BIPOLA TTL PROM

Numéro de référence UPB429-2
Description 2K x 8-BIT BIPOLA TTL PROM
Fabricant NEC 
Logo NEC 





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UPB429-2 fiche technique
NEe Microcomputers, Inc.
NEe
p.PB409
J'!PB429
",PB409-1
}LPB429-1
p.PB409-2
ILPB429-2
2048 WORD BY 8 BIT BIPOLAR TTL
PROGRAMMABLE READ ONLY MEMORY
DESC RIPT ION
The JlPB409 and JlPB429 are high-speed, electrically programmable, fully-decoded
16384 bit TTL read only memories. On-chip address decoding, three chip enable
inputs and open-collector/three-state outputs allow easy expansion of memory
capacity. The JlPB409 and JlPB429 are fabricated with logic level zero (low); logic
level one (high) can be electrically programmed into the selected bit locations. The .
same address inputs are used for both programming and reading.
FEATURES
2048 WORDS x 8 BITS Organization (Fully Decoded)
• TT L Interface
• Fast Read Access Time
:50 ns MAX
• Medium Power Consumption :500 mW TyP
• Three Chip Enable Inputs for Memory Expansion
• Open-Collector Outputs (JlPB409)
• Three-State Outputs (JlPB429)
• Ceramic 24-Lead Dual In-Line Package (JlPB409D, JlPB429D)
• Plastic 24-Lead Dual In-Line Package (JlPB409C, JlPB429C)
• Fast Programming Time
:200.Jls/bit TYP
• Replaceable with
:82S190/191
HM76160/76161, 3636
and Equivalent Type Devices
PIN CONFIGURATION
A7
A6 2
AS 3
A4 4
A3 5
/.IPS
A2 6 409/
Al 429
Ao 8
01 9
°2
03
GND
12
24 VCC
23 AS
22 Ag
21 A10
20 CEI
19 CE2
18 CE3
17 Os
16 '°7
15 06
14 Os
13 °4
PIN NAMES
AO-Al0
CE1-CE3
01-0 8
Address Inputs
Chip Enable Inputs
Data Outputs
",,1
137

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