HEF40193B 查看數據表（PDF） - NXP Semiconductors.

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HEF40193B

4-bit up/down binary counter

NXP Semiconductors. 

NXP Semiconductors

HEF40193B

4-bit up/down binary counter

5. Pinning information

5.1 Pinning

Fig 3. Pin configuration

HEF40193B

D1 1

Q1 2

Q0 3

CPD 4

CPU 5

Q2 6

Q3 7

VSS 8

16 VDD

15 D0

14 MR

13 TCD

12 TCU

11 PL

10 D2

9 D3

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5.2 Pin description

Table 2. Pin description

Symbol

Pin

D0 to D3

15, 1, 10, 9

CPU

5

CPD

4

PL

11

MR

14

Q0 to Q3

3, 2, 6, 7

TCU

12

TCD

13

VDD

16

VSS

8

Description

parallel data input

count-up clock pulse input (LOW-to-HIGH, edge-triggered)

count-down clock pulse input (LOW-to-HIGH, edge-triggered)

parallel load input (active LOW)

master reset input (asynchronous)

buffered counter output

buffered terminal count-up (carry) output (active LOW)

buffered terminal count-down (borrow) output (active LOW)

supply voltage

ground supply voltage

HEF40193B

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 8 — 18 November 2011

© NXP B.V. 2011. All rights reserved.

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