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74HC/HCT93
Datasheet
General description
The 74HC/HCT93 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A.
The 74HC/HCT93 are 4-bit binary ripple counters. The devices consist of four master-slave flip-flops internally connected to provide a divide-by-two section and a divide-by-eight section. Each section has a separate clock input (CP0 and CP1) to initiate state changes of the counter on the HIGH-to-LOW clock transition. State changes of the Qn outputs do not occur simultaneously because of internal ripple delays. Therefore, decoded output signals are subject to decoding spikes and should not be used for clocks or strobes.
A gated AND asynchronous master reset (MR1 and MR2) is provided which overrides both clocks and resets (clears) all flip-flops.
Since the output from the divide-by-two section is not internally connected to the succeeding stages, the device may be operated in various counting modes. In a 4-bit ripple counter the output Q0 must be connected externally to input CP1. The input count pulses are applied to clock input CP0. Simultaneous frequency divisions of 2, 4, 8 and 16 are performed at the Q0, Q1, Q2 and Q3 outputs as shown in the function table. As a 3-bit ripple counter the input count pulses are applied to input CP1.
Simultaneous frequency divisions of 2, 4 and 8 are available at the Q1, Q2 and Q3 outputs. Independent use of the first flip-flop is available if the reset function coincides with reset of the 3-bit ripple-through counter.
Features
- Various counting modes
- Asynchronous master reset
- Output capability: standard
- ICC category: MSI
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| 74HC93D | 74HC93D | 9337 569 50112 | Volume production | SOT108-1
(SO14) | Bulk Pack | Standard Marking | 74HC93D
| week 5, 2004 |
| 74HC93D | 74HC93D-T | 9337 569 50118 | Volume production | SOT108-1
(SO14) | Reel Pack, SMD, 13" | Standard Marking | 74HC93D
| week 5, 2004 |
| 74HC93DB | 74HC93DB | 9351 903 20112 | Volume production | SOT337-1
(SSOP14) | Tube | Standard Marking | 74HC93DB
| week 12, 2005 |
| 74HC93DB | 74HC93DB-T | 9351 903 20118 | Volume production | SOT337-1
(SSOP14) | Reel Pack, SMD, 13" | Standard Marking | 74HC93DB
| week 12, 2005 |
| 74HC93N | 74HC93N | 9337 569 40112 | Volume production | SOT27-1
(DIP14) | Bulk Pack | Standard Marking | 74HC93N
| Always Pb-free |
| 74HCT93D | 74HCT93D | 9337 569 70112 | Volume production | SOT108-1
(SO14) | Bulk Pack | Standard Marking | 74HCT93D
| week 5, 2004 |
| 74HCT93D | 74HCT93D-T | 9337 569 70118 | Volume production | SOT108-1
(SO14) | Reel Pack, SMD, 13" | Standard Marking | 74HCT93D
| week 5, 2004 |
| 74HCT93N | 74HCT93N | 9337 569 60112 | Volume production | SOT27-1
(DIP14) | Bulk Pack | Standard Marking | 74HCT93N
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| 74HC93D | 9337 569 50112 | 0.4500 | NA | DIGI-KEY CORPORATION | 365 | 9/3/2008 | Buy online | not available |
| 74HC93D | 9337 569 50118 | 0.4500 | Order samples | |||||
| 74HC93DB | 9351 903 20112 | 0.4500 | NA | DIGI-KEY CORPORATION | 25 | 9/3/2008 | Buy online | not available |
| 74HC93DB | 9351 903 20118 | 0.4500 | Order samples | |||||
| 74HC93N | 9337 569 40112 | 0.4500 | NA | ARROW ELECTRONICS | 615 | 9/4/2008 | Buy online | Order samples |
| NA | AVNET ELECTRONICS MARKETING | 1,800 | 9/5/2008 | Buy online | ||||
| EU | FARNELL | 1,156 | 9/4/2008 | Buy online | ||||
| NA | MOUSER ELECTRONICS | 716 | 9/5/2008 | Buy online | ||||
| NA | NEWARK | 1,156 | 9/5/2008 | Buy online | ||||
| 74HCT93D | 9337 569 70112 | 0.6000 | NA | DIGI-KEY CORPORATION | 717 | 9/3/2008 | Buy online | not available |
| 74HCT93D | 9337 569 70118 | 0.6000 | Order samples | |||||
| 74HCT93N | 9337 569 60112 | 0.4500 | Order samples |
Applications
- Multistage synchronous counting
- Multistage asynchronous counting
- Frequency dividers
Parametrics/similar products
| Type number | Package | Description | Fmax(MHz) | Propagation Delay(ns) | Voltage | No. of Pins | Power Dissipation Considerations | Logic Switching Levels | Output Drive Capability |
|---|---|---|---|---|---|---|---|---|---|
| 74HC93D | SOT108-1
(SO14) | 4-Bit Binary Ripple Counter | 100 | 12@5V | 2.0-6.0 V | 14 | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HC93DB | SOT337-1
(SSOP14) | 4-Bit Binary Ripple Counter | 100 | 11@5V | 2.0-6.0 V | 14 | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HC93N | SOT27-1
(DIP14) | 4-Bit Binary Ripple Counter | 100 | 11@5V | 2.0-6.0 V | 14 | Low Power or Battery Applications | CMOS | +/- 5.2 mA |
| 74HCT93D | SOT108-1
(SO14) | 4-Bit Binary Ripple Counter; TTL Enabled | 77 | 15 | 4.5-5.5 V | 14 | Low Power | TTL | +/- 4 mA |
| 74HCT93N | SOT27-1
(DIP14) | 4-Bit Binary Ripple Counter; TTL Enabled | 77 | 15 | 4.5-5.5 V | 14 | Low Power | TTL | +/- 4 mA |
Similar products
74HC/HCT93 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.
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