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參數(shù)資料
| 型號(hào)： | SN54LS399J |
| 廠商： | MOTOROLA INC |
| 元件分類(lèi)： | 通用總線(xiàn)功能 |
| 英文描述： | QUAD 2-PORT REGISTER |
| 中文描述： | LS SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, CDIP16 |
| 封裝： | CERAMIC, DIP-16 |
| 文件頁(yè)數(shù)： | 1/6頁(yè) |
| 文件大?。?/td> | 209K |
| 代理商： | SN54LS399J |
5-557
FAST AND LS TTL DATA
QUAD 2-PORT REGISTER
The SN54/74LS398 and SN54/74LS399 are Quad 2-Port Registers. They
are the logical equivalent of a quad 2-input multiplexer followed by a quad 4-bit
edge-triggered register. A Common Select input selects between two 4-bit in-
put ports (data sources). The selected data is transferred to the output register
on the LOW-to-HIGH transition of the Clock input. The SN54/74LS398 fea-
tures both Q and Q inputs, while the SN54/74LS399 has only Q outputs.
Select From Two Data Sources
Fully Positive Edge-Triggered Operation
Both True and Complemented Outputs on SN54/74LS398
Input Clamp Diodes Limit High-Speed Termination Effects
CONNECTION DIAGRAM DIP
(TOP VIEW)
SN54/74LS398
SN54/74LS399
PIN NAMES
LOADING
(Note a)
HIGH
LOW
S
CP
I0a–I0d
I1a–I0d
Qa–Qd
Qa–Qd
Common Select Input
Clock (Active HIGH Going Edge) Input
Data Inputs From Source 0
Data Inputs From Source 1
Register True Outputs (Note b)
Register Complementary Outputs
(Note b)
0.5 U.L.
0.5 U.L.
0.5 U.L.
0.5 U.L.
10 U.L.
0.25 U.L.
0.25 U.L.
0.25 U.L.
0.25 U.L.
5 (2.5) U.L.
10 U.L.
5 (2.5) U.L.
NOTES:
a) 1 TTL Unit Load (U.L.) = 40
μ
A HIGH/1.6 mA LOW.
b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial
(74) Temperature Ranges.
SN54/74LS398
SN54/74LS399
QUAD 2-PORT REGISTER
LOW POWER SCHOTTKY
ORDERING INFORMATION
SN54LSXXXJ
SN74LSXXXN
SN74LSXXXDW SOIC
SN74LSXXXD
Ceramic
Plastic
SOIC
J SUFFIX
CERAMIC
CASE 620-09
N SUFFIX
PLASTIC
CASE 648-08
16
1
16
1
16
1
D SUFFIX
SOIC
CASE 751B-03
20
1
J SUFFIX
CERAMIC
CASE 732-03
20
1
N SUFFIX
PLASTIC
CASE 738-03
20
1
DW SUFFIX
SOIC
CASE 751D-03
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SN74LS398D | QUAD 2-PORT REGISTER |
| SN74LS398N | QUAD 2-PORT REGISTER |
| SN74LS399D | QUAD 2-PORT REGISTER |
| SN74LS399DW | QUAD 2-PORT REGISTER |
| SN74LS399N | QUAD 2-PORT REGISTER |
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