74LVC161
Presettable synchronous 4-bit binary counter; asynchronous reset
The 74LVC161 is a synchronous presettable binary counter with an internal look-head carry. Synchronous operation is provided by having all flip-flops clocked simultaneously on the positive?-?going edge of the clock (CP). The outputs (Q0 to Q3) of the counters may be preset HIGH or LOW. A LOW at the parallel enable input (PE) disables the counting action and causes the data at the data inputs (D0 to D3) to be loaded into the counter on the positive-going edge of the clock. Preset takes place regardless of the levels at count enable inputs (CEP and CET). A LOW at the master reset input (MR) sets Q0 to Q3 LOW regardless of the levels at input pins CP, PE, CET and CEP (thus providing an asynchronous clear function). The look-ahead carry simplifies serial cascading of the counters. Both CEP and CET must be HIGH to count. The CET input is fed forward to enable the terminal count output (TC). The TC output thus enabled will produce a HIGH output pulse of a duration approximately equal to a HIGH output of Q0. This pulse can be used to enable the next cascaded stage.
Inputs can be driven from either 3.3 V or 5 V devices. This feature allows the use of these devices as translators in mixed 3.3 V and 5 V environments.
Schmitt-trigger action at all inputs makes the circuit tolerant of slower input rise and fall times.
Features and benefits
Overvoltage tolerant inputs to 5.5 V
Wide supply voltage range from 1.2 V to 3.6 V
CMOS low power dissipation
Direct interface with TTL levels
Asynchronous reset
Synchronous counting and loading
Two count enable inputs for n-bit cascading
Positive edge-triggered clock
Complies with JEDEC standard:
JESD8-7A (1.65 V to 1.95 V)
JESD8-5A (2.3 V to 2.7 V)
JESD8-C/JESD36 (2.7 V to 3.6 V)
ESD protection:
HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
Specified from -40 °C to +85 °C and -40 °C to +125 °C
參數類型
| 型號 | VCC (V) | Output drive capability (mA) | Logic switching levels | tpd (ns) | Power dissipation considerations | Tamb (°C) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name |
|---|---|---|---|---|---|---|---|---|---|---|
| 74LVC161BQ | 1.2?-?3.6 | ± 24 | CMOS/LVTTL | 4.9 | low | -40~125 | 93 | 13.8 | 62 | DHVQFN16 |
| 74LVC161D | 1.2?-?3.6 | ± 24 | CMOS/LVTTL | 4.9 | low | -40~125 | 92 | 9.6 | 51.7 | SO16 |
| 74LVC161PW | 1.2?-?3.6 | ± 24 | CMOS/LVTTL | 4.9 | low | -40~125 | 125 | 4.6 | 54.7 | TSSOP16 |
封裝
| 型號 | 可訂購的器件編號，（訂購碼(12NC)） | 狀態 | 標示 | 封裝 | 外形圖 | 回流焊/波峰焊 | 包裝 |
|---|---|---|---|---|---|---|---|
| 74LVC161BQ | 74LVC161BQ,115 (935275612115) |
Active | LVC161 |
DHVQFN16 (SOT763-1) |
SOT763-1 | SOT763-1_115 | |
| 74LVC161D | 74LVC161D,118 (935210510118) |
Active | 74LVC161D |
SO16 (SOT109-1) |
SOT109-1 |
SO-SOJ-REFLOW
SO-SOJ-WAVE WAVE_BG-BD-1 |
SOT109-1_118 |
| 74LVC161PW | 74LVC161PW,118 (935210530118) |
Active | LVC161 |
TSSOP16 (SOT403-1) |
SOT403-1 |
SSOP-TSSOP-VSO-WAVE
|
SOT403-1_118 |
下表中的所有產品型號均已停產 。
| 型號 | 可訂購的器件編號，（訂購碼(12NC)） | 狀態 | 標示 | 封裝 | 外形圖 | 回流焊/波峰焊 | 包裝 |
|---|---|---|---|---|---|---|---|
| 74LVC161D | 74LVC161D,112 (935210510112) |
Withdrawn / End-of-life | 74LVC161D |
SO16 (SOT109-1) |
SOT109-1 |
SO-SOJ-REFLOW
SO-SOJ-WAVE WAVE_BG-BD-1 |
SOT109-1_112 |
| 74LVC161DB | 74LVC161DB,112 (935210520112) |
Obsolete |
SSOP16 (SOT338-1) |
SOT338-1 |
SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE |
暫無信息 | |
| 74LVC161DB,118 (935210520118) |
Withdrawn / End-of-life | 暫無信息 |
環境信息
| 型號 | 可訂購的器件編號 | 化學成分 | RoHS | RHF指示符 |
|---|---|---|---|---|
| 74LVC161BQ | 74LVC161BQ,115 | 74LVC161BQ |
|
|
| 74LVC161D | 74LVC161D,118 | 74LVC161D |
|
|
| 74LVC161PW | 74LVC161PW,118 | 74LVC161PW |
|
|
下表中的所有產品型號均已停產 。
| 型號 | 可訂購的器件編號 | 化學成分 | RoHS | RHF指示符 |
|---|---|---|---|---|
| 74LVC161D | 74LVC161D,112 | 74LVC161D |
|
|
| 74LVC161DB | 74LVC161DB,112 | 74LVC161DB |
|
|
| 74LVC161DB | 74LVC161DB,118 | 74LVC161DB |
|
|
文檔 (24)
| 文件名稱 | 標題 | 類型 | 日期 |
|---|---|---|---|
| 74LVC161 | Presettable synchronous 4-bit binary counter; asynchronous reset | Data sheet | 2024-02-12 |
| AN11009 | Pin FMEA for LVC family | Application note | 2019-01-09 |
| AN263 | Power considerations when using CMOS and BiCMOS logic devices | Application note | 2023-02-07 |
| AN90063 | Questions about package outline drawings | Application note | 2025-06-13 |
| mna907 | Block diagram: 74HC161D, 74HC161DB, 74HC161N, 74HC161PW, 74HC163D, 74HC163DB, 74HC163N, 74HC163PW, 74HCT161D, 74HCT161DB, 74HCT161N, 74HCT161PW, 74HCT163D, 74HCT163DB, 74HCT163N, 74HCT163PW, 74LVC161BQ, 74LVC161D, 74LVC161DB, 74LVC161PW | Block diagram | 2009-11-03 |
| SOT763-1 | 3D model for products with SOT763-1 package | Design support | 2019-10-03 |
| SOT109-1 | 3D model for products with SOT109-1 package | Design support | 2020-01-22 |
| SOT403-1 | 3D model for products with SOT403-1 package | Design support | 2020-01-22 |
| lvc161 | lvc161 IBIS model | IBIS model | 2013-04-08 |
| Nexperia_package_poster | Nexperia package poster | Leaflet | 2020-05-15 |
| DHVQFN16_SOT763-1_mk | plastic, dual in-line compatible thermal enhanced very thin quad flat package; 16 terminals; 0.5 mm pitch; 3.5 mm x 2.5 mm x 0.85 mm body | Marcom graphics | 2017-01-28 |
| SO16_SOT109-1_mk | plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.35 mm body | Marcom graphics | 2017-01-28 |
| SSOP16_SOT338-1_mk | plastic, shrink small outline package; 16 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm body | Marcom graphics | 2017-01-28 |
| TSSOP16_SOT403-1_mk | plastic, thin shrink small outline package; 16 leads; 0.65 mm pitch; 5 mm x 4.4 mm x 1.1 mm body | Marcom graphics | 2017-01-28 |
| SOT763-1 | plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 16 terminals; 0.5 mm pitch; 3.5 mm x 2.5 mm x 1 mm body | Package information | 2023-05-11 |
| SOT109-1 | plastic, small outline package; 16 leads; 1.27 mm pitch; 9.9 mm x 3.9 mm x 1.75 mm body | Package information | 2023-11-07 |
| SOT338-1 | plastic, shrink small outline package; 16 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm body | Package information | 2022-06-20 |
| SOT403-1 | plastic, thin shrink small outline package; 16 leads; 5 mm x 4.4 mm x 1.2 mm body | Package information | 2023-11-08 |
| SO-SOJ-REFLOW | Footprint for reflow soldering | Reflow soldering | 2009-10-08 |
| SSOP-TSSOP-VSO-REFLOW | Footprint for reflow soldering | Reflow soldering | 2009-10-08 |
| lvc | lvc Spice model | SPICE model | 2013-05-07 |
| SO-SOJ-WAVE | Footprint for wave soldering | Wave soldering | 2009-10-08 |
| WAVE_BG-BD-1 | Wave soldering profile | Wave soldering | 2021-09-08 |
| SSOP-TSSOP-VSO-WAVE | Footprint for wave soldering | Wave soldering | 2009-10-08 |
支持
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模型
| 文件名稱 | 標題 | 類型 | 日期 |
|---|---|---|---|
| SOT763-1 | 3D model for products with SOT763-1 package | Design support | 2019-10-03 |
| SOT109-1 | 3D model for products with SOT109-1 package | Design support | 2020-01-22 |
| SOT403-1 | 3D model for products with SOT403-1 package | Design support | 2020-01-22 |
| lvc161 | lvc161 IBIS model | IBIS model | 2013-04-08 |
| lvc | lvc Spice model | SPICE model | 2013-05-07 |
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