跳转到主要内容
CMOS Presettable Up/Down Counter

封装信息

CAD 模型: View CAD Model
Pkg. Type: DIE
Pkg. Code:
Lead Count (#):
Pkg. Dimensions (mm): 0.0 x 0.0 x 0.00
Pitch (mm):

环境和出口类别

Moisture Sensitivity Level (MSL) Not Applicable
Pb (Lead) Free Yes
RoHS (CD4029BHSR) 英语日文
ECCN (US)
HTS (US)

产品属性

Pkg. Type DIE
Carrier Type Die Waffle Pack
Moisture Sensitivity Level (MSL) Not Applicable
Pkg. Dimensions (mm) 0.0 x 0.0 x 0.00
DLA SMD 5962R9562101V9A
Pb (Lead) Free Yes
Pb Free Category None
MOQ 100
Temp. Range (°C) -55 to +125°C
DSEE (MeV·cm2/mg) 75
Lead Compliant No
Qualification Level QML Class V (space)
Rating Space
TID HDR (krad(Si)) 100
TID LDR (krad(Si)) ELDRS free
Tape & Reel No

描述

The CD4029BMS consists of a four-stage binary or BCD-decade up/down counter with provisions for look-ahead carry in both counting modes. The inputs consist of a single CLOCK, CARRY-IN (CLOCK ENABLE), BINARY/DECADE, UP/DOWN, PRESET ENABLE, and four individual JAM signals. Q1, Q2, Q3, Q4 and a CARRY-OUT OUT signal are provided as outputs. A high PRESET ENABLE signal allows information on the JAM INPUTS to preset the counter to any state asynchronously with the clock. A low on each JAM line, when the PRESET-ENABLE signal is high, resets the counter to its zero count. The counter is advanced one count at the positive transition of the clock when the CARRY-IN-IN and PRE-SET ENABLE signals are low. Advancement is inhibited when the CARRY-IN or PRESET ENABLE signals are high. The CARRY-OUT signal is normally high and goes low when the counter reaches its maximum count in the UP mode or the minimum count in the DOWN mode provided the CARRY-IN signal is low. The CARRY-IN signal in the low state can thus be considered a CLOCK ENABLE. The CARRY-IN terminal must be connected to VSS when not in use. Binary counting is accomplished when the BINARY/DECADE input is high; the counter counts in the decade mode when the BINARY/DECADE input is low. The counter counts up when the UP/DOWN input is high, and down when the UP/DOWN input is low. Multiple packages can be connected in either a parallel-clocking or a ripple-clocking arrangement. Parallel clocking provides synchronous control and hence faster response from all counting outputs. Ripple-clocking allows for longer clock input rise and fall times. The CD4029BMS is supplied in these 16-lead outline packages: Braze Seal DIP H4X, Frit Seal DIP H1F and Ceramic Flatpack H6W.