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參數(shù)資料
| 型號(hào)： | MC145532DW |
| 廠商： | MOTOROLA INC |
| 元件分類： | 編解碼器 |
| 英文描述： | Single Channel (1.2V) SVS with /MR in 5/SOT23 5-SOT-23 -40 to 85 |
| 中文描述： | A/MU-LAW, ADPCM CODEC, PDSO16 |
| 封裝： | SOG-16 |
| 文件頁數(shù)： | 4/16頁 |
| 文件大?。?/td> | 220K |
| 代理商： | MC145532DW |
MC145532
4
MOTOROLA
DECODER OUTPUT — SHORT FRAME
Figure 7 shows the timing of the decoder output in short
frame mode.
The DDO will provide the 8–bit PCM word for the decoding
rate that was selected for this frame of data on the decoder
input pins. The data is loaded into the MC145532 during one
frame, decoded on the next frame, and read during the third
frame.
DECODER OUTPUT — LONG FRAME
Figure 8 shows the timing of the decoder output in long
frame mode. Note that at least eight bits are presented to the
output, provided that at least two falling edges of DDC are
seen while DOE is high. The enable can be used to extend
the LSB to a full DDC period and/or cause the eight bits of
data to be recirculated to the output pin until the enable falls.
STANDARDS INFORMATION
The following standards apply to the MC145532:
T1.301–1987 — 32 kbps ADPCM
T1.303–1988 — 24 kbps ADPCM
CCITT G.721–1988, G.723–1988, and G.726 — 32 kbps
and 24 kbps
CCITT, ITU–T, TIA, and EIA documents may be obtained
by contacting Global Engineering Documents in the USA at
(800) 854–7179, or internationally at (303) 397–7956.
ABSOLUTE MAXIMUM RATINGS
(Voltages Referenced to VSS)
Rating
Symbol
Value
Unit
DC Supply Voltage
VDD
V
– 0.5 to + 7.0
V
Voltage, Any Pin to VSS
DC Current, Any Pin
– 0.5 to VDD + 0.5
±
10
V
Iin
TA
Tstg
mA
Operating Temperature
– 40 to + 85
°
C
Storage Temperature
– 85 to + 150
°
C
RECOMMENDED OPERATING CONDITIONS
(TA = – 40 to + 85
°
C)
Parameter
Symbol
Min
Max
Unit
DC Supply Voltage
VDD
PD
4.50
5.50
V
Power Dissipation
—
0.28
W
DIGITAL CHARACTERISTICS
(VDD = 5.0 V, TA = – 40 to + 85
°
C)
Parameter
Symbol
Min
Max
Unit
High Level Input Voltage
Mode, DOE, DDC, DDI, DIE, EIE, EDI, EDC, EOE
VIH
VIL
VIH
VIL
Iin
Cin
VOH
VOL
Ilkg
2.0
—
V
Low Level Input Voltage
Mode, DOE, DDC, DDI, DIE, EIE, EDI, EDC, EOE
—
0.8
V
High Level Input Voltage
RESET, APD, SPC
0.7 VDD
—
—
V
Low Level Input Voltage
RESET, APD, SPC
0.3 VDD
±
1.0
V
Input Current
—
μ
A
Input Capacitance
—
10
pF
High Level Output Voltage (IOH = – 2.0 mA)
Low Level Output Voltage (IOL = 2.0 MA)
Output Leakage Current (VDD = 5.5 V)
DDO, EDO
4.6
—
V
DDO, EDO
—
0.4
V
DDO, EDO
—
±
5.0
μ
A
SWITCHING CHARACTERISTICS
(VDD = 5.0 V, TA = – 40 to + 85
°
C)
Parameter
Min
Max
Unit
SPC Frequency
19.990
23
MHz
SPC Duty Cycle
45
55
%
This device contains circuitry to protect
against damage due to high static voltages or
electric fields; however, it is advised that
normal precautions be taken to avoid appli-
cation of any voltage higher than maximum
rated voltages to this high impedance circuit.
For proper operation it is recommended that
Vin and Vout be constrained to the range VSS
≤
(Vin or Vout)
≤
VDD.
Unused inputs must always be tied to an
appropriate logic voltage level (e.g., either VSS
or VDD).
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| MC145532L | ADPCM Transcoder |
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| MC145532L | 制造商:Motorola Inc 功能描述:PCM ENCODER/DECODER, 16 Pin, Ceramic, DIP |
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| MC14553BCPG | 功能描述:計(jì)數(shù)器移位寄存器 3-18V 3-Digit BCD RoHS:否 制造商:Texas Instruments 計(jì)數(shù)器類型: 計(jì)數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時(shí)間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| MC14553BCPG | 制造商:ON Semiconductor 功能描述:Counter / Multiplier / Divider Logic IC |
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